【发布时间】：2015-04-13 02:40:29
【问题描述】：
请向下滚动到“EDIT”:)
我正在尝试使用 Android Studio 了解一些基本的 android 动画编程，并且我在互联网上遵循了一些教程。 我已经知道一些基本的 Java 编程，但是我制作的“复制/粘贴应用程序”有问题。
这是我的 MainActivity：
public class MainActivity extends ActionBarActivity {
private Button play;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
play = (Button) findViewById(R.id.play_button);
play.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent startGame = new Intent("com.abc.test.DRAWGAME2");
startActivity(startGame);
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}}
这是 DrawGame2.java：
public class DrawGame2 extends Activity implements View.OnTouchListener {
private MyView surfaceView;
private float y;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
surfaceView = new MyView(this);
surfaceView.setOnTouchListener(this);
setContentView(surfaceView);
}
@Override
protected void onPause() {
super.onPause();
surfaceView.pause();
}
@Override
protected void onResume() {
super.onResume();
surfaceView.resume();
}
@Override
public boolean onTouch(View v, MotionEvent me) {
try {
Thread.sleep(50);
} catch (InterruptedException e) {
e.printStackTrace();
}
switch (me.getAction()){
case MotionEvent.ACTION_DOWN:
y = me.getY();
break;
case MotionEvent.ACTION_UP:
y = me.getY();
break;
case MotionEvent.ACTION_MOVE:
y = me.getY();
break;
}
return true;
}
public class MyView extends SurfaceView implements Runnable {
private Thread thread = null;
private SurfaceHolder holder;
private boolean isRunning = false;
public MyView(Context context) {
super(context);
holder = getHolder();
y = 0;
}
public void run() {
while (isRunning) {
if (!holder.getSurface().isValid()) {
continue;
}
Canvas canvas = holder.lockCanvas();
canvas.drawRGB(02,02,150);
if (y != 0){
Bitmap test = BitmapFactory.decodeResource(getResources(),R.drawable.greenball);
canvas.drawBitmap(test, canvas.getWidth()/2 - test.getWidth()/2, y, null);
}
holder.unlockCanvasAndPost(canvas);
}
}
public void pause() {
isRunning = false;
while (true) {
try {
thread.join();
} catch (InterruptedException e) {
e.printStackTrace();
}
break;
}
thread = null;
}
public void resume() {
isRunning = true;
thread = new Thread(this);
thread.start();
}
}}
Logcat：
02-12 11:01:06.676 1972-1972/com.abc.test I/art﹕ Not late-enabling -Xcheck:jni (already on)
02-12 11:01:06.881 1972-1990/com.abc.test D/OpenGLRenderer﹕ Render dirty regions requested: true
02-12 11:01:06.882 1972-1972/com.abc.test D/﹕ HostConnection::get() New Host Connection established 0xa686fb60, tid 1972
02-12 11:01:06.917 1972-1972/com.abc.test D/Atlas﹕ Validating map...
02-12 11:01:07.007 1972-1990/com.abc.test D/﹕ HostConnection::get() New Host Connection established 0xa686fd90, tid 1990
02-12 11:01:07.037 1972-1990/com.abc.test I/OpenGLRenderer﹕ Initialized EGL, version 1.4
02-12 11:01:07.102 1972-1990/com.abc.test D/OpenGLRenderer﹕ Enabling debug mode 0
02-12 11:01:07.126 1972-1990/com.abc.test W/EGL_emulation﹕ eglSurfaceAttrib not implemented
02-12 11:01:07.126 1972-1990/com.abc.test W/OpenGLRenderer﹕ Failed to set EGL_SWAP_BEHAVIOR on surface 0xa6814940, error=EGL_SUCCESS
02-12 11:01:07.705 1972-1990/com.abc.test W/EGL_emulation﹕ eglSurfaceAttrib not implemented
02-12 11:01:07.705 1972-1990/com.abc.test W/OpenGLRenderer﹕ Failed to set EGL_SWAP_BEHAVIOR on surface 0xa6814940, error=EGL_SUCCESS
02-12 11:01:12.571 1972-1990/com.abc.test W/EGL_emulation﹕ eglSurfaceAttrib not implemented
02-12 11:01:12.571 1972-1990/com.abc.test W/OpenGLRenderer﹕ Failed to set EGL_SWAP_BEHAVIOR on surface 0xa5a69ba0, error=EGL_SUCCESS
02-12 11:01:16.892 1972-1972/com.abc.test I/Choreographer﹕ Skipped 263 frames! The application may be doing too much work on its main thread.
02-12 11:01:16.899 1972-2270/com.abc.test D/﹕ HostConnection::get() New Host Connection established 0xa5dfcc10, tid 2270
这个应用程序的问题是动画真的很滞后，我不知道为什么！ 我试图用一个简单的矩形制作相同的动画，但滞后仍然存在。
问题不在于 OnTouchListener，因为我尝试在 run 方法中的每个循环中将 y 值增加 1（同时禁用 OnTouchListener），但它仍然滞后。
我尝试过使用不同的模拟器（Lollipop、Kitkat）和我的三星 Galaxy S3（果冻豆）。
有没有聪明人可以帮助我解决这个问题？ :)
祝你有美好的一天！
编辑：
好的，所以我应用了我得到的答案，现在它可以在我的三星 Galaxy S3 上顺利运行！
不过，我的模拟器上仍然存在滞后现象。我已经安装了 HAXM 并且模拟器在我创建的应用程序之外顺利运行，但是一旦我启动应用程序并按下“播放”按钮，当我与应用程序交互时动画就会滞后。
这是我的模拟器的属性：
Name: Nexus_5_API_21
CPU/ABI: Intel Atom (x86)
hw.gpu.enabled: yes
Path: C:\Users\User\.android\avd\Nexus_5_API_21.avd
Target: Android 5.0.1 (API level 21)
Skin: nexus_5
SD Card: 100M
Snapshot: no
hw.lcd.density: 480
hw.dPad: no
avd.ini.encoding: UTF-8
hw.camera.back: none
disk.dataPartition.size: 200M
runtime.network.latency: none
skin.dynamic: no
hw.keyboard: yes
runtime.network.speed: full
hw.device.hash2: MD5:2fa0e16c8cceb7d385183284107c0c88
hw.ramSize: 1536
tag.id: default
tag.display: Default
hw.sdCard: yes
hw.device.manufacturer: Google
hw.mainKeys: no
hw.accelerometer: yes
hw.trackBall: no
hw.device.name: Nexus 5
hw.sensors.proximity: yes
hw.battery: yes
AvdId: Nexus_5_API_21
hw.sensors.orientation: yes
hw.audioInput: yes
hw.camera.front: none
hw.gps: yes
avd.ini.displayname: Nexus 5 API 21
snapshot.present: no
vm.heapSize: 64
runtime.scalefactor: auto
【问题讨论】：
标签： java android animation lag