380 lines
13 KiB
Java
380 lines
13 KiB
Java
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package android.app;
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import com.android.internal.view.IInputMethodCallback;
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import com.android.internal.view.IInputMethodSession;
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import android.content.Context;
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import android.content.pm.ActivityInfo;
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import android.content.pm.PackageManager;
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import android.content.res.AssetManager;
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import android.content.res.Configuration;
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import android.graphics.PixelFormat;
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import android.os.Build;
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import android.os.Bundle;
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import android.os.Environment;
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import android.os.Looper;
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import android.os.MessageQueue;
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import android.util.AttributeSet;
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import android.view.InputChannel;
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import android.view.InputQueue;
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import android.view.KeyEvent;
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import android.view.Surface;
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import android.view.SurfaceHolder;
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import android.view.View;
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import android.view.WindowManager;
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import android.view.ViewTreeObserver.OnGlobalLayoutListener;
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import android.view.inputmethod.InputMethodManager;
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import java.io.File;
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import java.lang.ref.WeakReference;
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/**
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* Convenience for implementing an activity that will be implemented
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* purely in native code. That is, a game (or game-like thing). There
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* is no need to derive from this class; you can simply declare it in your
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* manifest, and use the NDK APIs from there.
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*
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* <p>A typical manifest would look like:
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*
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* {@sample development/ndk/platforms/android-9/samples/native-activity/AndroidManifest.xml
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* manifest}
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*
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* <p>A very simple example of native code that is run by NativeActivity
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* follows. This reads input events from the user and uses OpenGLES to
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* draw into the native activity's window.
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*
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* {@sample development/ndk/platforms/android-9/samples/native-activity/jni/main.c all}
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*/
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public class NativeActivity extends Activity implements SurfaceHolder.Callback2,
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InputQueue.Callback, OnGlobalLayoutListener {
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/**
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* Optional meta-that can be in the manifest for this component, specifying
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* the name of the native shared library to load. If not specified,
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* "main" is used.
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*/
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public static final String META_DATA_LIB_NAME = "android.app.lib_name";
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/**
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* Optional meta-that can be in the manifest for this component, specifying
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* the name of the main entry point for this native activity in the
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* {@link #META_DATA_LIB_NAME} native code. If not specified,
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* "ANativeActivity_onCreate" is used.
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*/
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public static final String META_DATA_FUNC_NAME = "android.app.func_name";
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private static final String KEY_NATIVE_SAVED_STATE = "android:native_state";
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private NativeContentView mNativeContentView;
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private InputMethodManager mIMM;
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private InputMethodCallback mInputMethodCallback;
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private int mNativeHandle;
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private InputQueue mCurInputQueue;
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private SurfaceHolder mCurSurfaceHolder;
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final int[] mLocation = new int[2];
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int mLastContentX;
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int mLastContentY;
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int mLastContentWidth;
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int mLastContentHeight;
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private boolean mDispatchingUnhandledKey;
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private boolean mDestroyed;
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private native int loadNativeCode(String path, String funcname, MessageQueue queue,
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String internalDataPath, String externalDataPath, int sdkVersion,
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AssetManager assetMgr, byte[] savedState);
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private native void unloadNativeCode(int handle);
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private native void onStartNative(int handle);
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private native void onResumeNative(int handle);
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private native byte[] onSaveInstanceStateNative(int handle);
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private native void onPauseNative(int handle);
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private native void onStopNative(int handle);
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private native void onConfigurationChangedNative(int handle);
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private native void onLowMemoryNative(int handle);
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private native void onWindowFocusChangedNative(int handle, boolean focused);
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private native void onSurfaceCreatedNative(int handle, Surface surface);
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private native void onSurfaceChangedNative(int handle, Surface surface,
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int format, int width, int height);
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private native void onSurfaceRedrawNeededNative(int handle, Surface surface);
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private native void onSurfaceDestroyedNative(int handle);
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private native void onInputChannelCreatedNative(int handle, InputChannel channel);
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private native void onInputChannelDestroyedNative(int handle, InputChannel channel);
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private native void onContentRectChangedNative(int handle, int x, int y, int w, int h);
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private native void dispatchKeyEventNative(int handle, KeyEvent event);
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private native void finishPreDispatchKeyEventNative(int handle, int seq, boolean handled);
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static class NativeContentView extends View {
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NativeActivity mActivity;
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public NativeContentView(Context context) {
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super(context);
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}
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public NativeContentView(Context context, AttributeSet attrs) {
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super(context, attrs);
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}
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}
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static class InputMethodCallback extends IInputMethodCallback.Stub {
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WeakReference<NativeActivity> mNa;
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InputMethodCallback(NativeActivity na) {
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mNa = new WeakReference<NativeActivity>(na);
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}
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@Override
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public void finishedEvent(int seq, boolean handled) {
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NativeActivity na = mNa.get();
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if (na != null) {
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na.finishPreDispatchKeyEventNative(na.mNativeHandle, seq, handled);
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}
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}
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@Override
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public void sessionCreated(IInputMethodSession session) {
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// Stub -- not for use in the client.
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}
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}
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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String libname = "main";
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String funcname = "ANativeActivity_onCreate";
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ActivityInfo ai;
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mIMM = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
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mInputMethodCallback = new InputMethodCallback(this);
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getWindow().takeSurface(this);
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getWindow().takeInputQueue(this);
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getWindow().setFormat(PixelFormat.RGB_565);
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getWindow().setSoftInputMode(
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WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED
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| WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
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mNativeContentView = new NativeContentView(this);
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mNativeContentView.mActivity = this;
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setContentView(mNativeContentView);
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mNativeContentView.requestFocus();
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mNativeContentView.getViewTreeObserver().addOnGlobalLayoutListener(this);
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try {
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ai = getPackageManager().getActivityInfo(
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getIntent().getComponent(), PackageManager.GET_META_DATA);
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if (ai.metaData != null) {
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String ln = ai.metaData.getString(META_DATA_LIB_NAME);
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if (ln != null) libname = ln;
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ln = ai.metaData.getString(META_DATA_FUNC_NAME);
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if (ln != null) funcname = ln;
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}
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} catch (PackageManager.NameNotFoundException e) {
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throw new RuntimeException("Error getting activity info", e);
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}
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String path = null;
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File libraryFile = new File(ai.applicationInfo.nativeLibraryDir,
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System.mapLibraryName(libname));
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if (libraryFile.exists()) {
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path = libraryFile.getPath();
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}
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if (path == null) {
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throw new IllegalArgumentException("Unable to find native library: " + libname);
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}
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byte[] nativeSavedState = savedInstanceState != null
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? savedInstanceState.getByteArray(KEY_NATIVE_SAVED_STATE) : null;
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mNativeHandle = loadNativeCode(path, funcname, Looper.myQueue(),
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getFilesDir().toString(),
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Environment.getExternalStorageAppFilesDirectory(ai.packageName).toString(),
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Build.VERSION.SDK_INT, getAssets(), nativeSavedState);
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if (mNativeHandle == 0) {
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throw new IllegalArgumentException("Unable to load native library: " + path);
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}
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super.onCreate(savedInstanceState);
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}
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@Override
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protected void onDestroy() {
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mDestroyed = true;
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if (mCurSurfaceHolder != null) {
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onSurfaceDestroyedNative(mNativeHandle);
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mCurSurfaceHolder = null;
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}
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if (mCurInputQueue != null) {
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onInputChannelDestroyedNative(mNativeHandle, mCurInputQueue.getInputChannel());
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mCurInputQueue = null;
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}
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unloadNativeCode(mNativeHandle);
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super.onDestroy();
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}
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@Override
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protected void onPause() {
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super.onPause();
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onPauseNative(mNativeHandle);
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}
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@Override
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protected void onResume() {
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super.onResume();
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onResumeNative(mNativeHandle);
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}
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@Override
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protected void onSaveInstanceState(Bundle outState) {
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super.onSaveInstanceState(outState);
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byte[] state = onSaveInstanceStateNative(mNativeHandle);
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if (state != null) {
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outState.putByteArray(KEY_NATIVE_SAVED_STATE, state);
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}
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}
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@Override
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protected void onStart() {
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super.onStart();
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onStartNative(mNativeHandle);
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}
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@Override
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protected void onStop() {
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super.onStop();
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onStopNative(mNativeHandle);
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}
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@Override
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public void onConfigurationChanged(Configuration newConfig) {
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super.onConfigurationChanged(newConfig);
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if (!mDestroyed) {
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onConfigurationChangedNative(mNativeHandle);
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}
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}
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@Override
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public void onLowMemory() {
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super.onLowMemory();
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if (!mDestroyed) {
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onLowMemoryNative(mNativeHandle);
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}
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}
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@Override
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public void onWindowFocusChanged(boolean hasFocus) {
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super.onWindowFocusChanged(hasFocus);
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if (!mDestroyed) {
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onWindowFocusChangedNative(mNativeHandle, hasFocus);
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}
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}
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@Override
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public boolean dispatchKeyEvent(KeyEvent event) {
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if (mDispatchingUnhandledKey) {
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return super.dispatchKeyEvent(event);
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} else {
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// Key events from the IME do not go through the input channel;
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// we need to intercept them here to hand to the application.
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dispatchKeyEventNative(mNativeHandle, event);
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return true;
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}
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}
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public void surfaceCreated(SurfaceHolder holder) {
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if (!mDestroyed) {
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mCurSurfaceHolder = holder;
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onSurfaceCreatedNative(mNativeHandle, holder.getSurface());
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}
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}
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public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
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if (!mDestroyed) {
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mCurSurfaceHolder = holder;
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onSurfaceChangedNative(mNativeHandle, holder.getSurface(), format, width, height);
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}
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}
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public void surfaceRedrawNeeded(SurfaceHolder holder) {
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if (!mDestroyed) {
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mCurSurfaceHolder = holder;
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onSurfaceRedrawNeededNative(mNativeHandle, holder.getSurface());
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}
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}
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public void surfaceDestroyed(SurfaceHolder holder) {
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mCurSurfaceHolder = null;
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if (!mDestroyed) {
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onSurfaceDestroyedNative(mNativeHandle);
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}
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}
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public void onInputQueueCreated(InputQueue queue) {
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if (!mDestroyed) {
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mCurInputQueue = queue;
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onInputChannelCreatedNative(mNativeHandle, queue.getInputChannel());
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}
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}
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public void onInputQueueDestroyed(InputQueue queue) {
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mCurInputQueue = null;
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if (!mDestroyed) {
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onInputChannelDestroyedNative(mNativeHandle, queue.getInputChannel());
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}
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}
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public void onGlobalLayout() {
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mNativeContentView.getLocationInWindow(mLocation);
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int w = mNativeContentView.getWidth();
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int h = mNativeContentView.getHeight();
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if (mLocation[0] != mLastContentX || mLocation[1] != mLastContentY
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|| w != mLastContentWidth || h != mLastContentHeight) {
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mLastContentX = mLocation[0];
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mLastContentY = mLocation[1];
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mLastContentWidth = w;
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mLastContentHeight = h;
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if (!mDestroyed) {
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onContentRectChangedNative(mNativeHandle, mLastContentX,
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mLastContentY, mLastContentWidth, mLastContentHeight);
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}
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}
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}
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void dispatchUnhandledKeyEvent(KeyEvent event) {
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try {
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mDispatchingUnhandledKey = true;
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View decor = getWindow().getDecorView();
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if (decor != null) {
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decor.dispatchKeyEvent(event);
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}
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} finally {
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mDispatchingUnhandledKey = false;
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}
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}
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void preDispatchKeyEvent(KeyEvent event, int seq) {
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mIMM.dispatchKeyEvent(this, seq, event,
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mInputMethodCallback);
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}
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void setWindowFlags(int flags, int mask) {
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getWindow().setFlags(flags, mask);
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}
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void setWindowFormat(int format) {
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getWindow().setFormat(format);
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}
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void showIme(int mode) {
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mIMM.showSoftInput(mNativeContentView, mode);
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}
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void hideIme(int mode) {
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mIMM.hideSoftInputFromWindow(mNativeContentView.getWindowToken(), mode);
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}
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}
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