Java Android IllegalArgumentException锁画布()
我一直在为这个例外而挣扎,我环顾四周,但没有任何帮助 这是密码Java Android IllegalArgumentException锁画布(),java,android,multithreading,android-canvas,surfaceview,Java,Android,Multithreading,Android Canvas,Surfaceview,我一直在为这个例外而挣扎,我环顾四周,但没有任何帮助 这是密码 package com.example.surfacetest; import android.app.Activity; import android.content.Context; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Color; import android.os.Bun
package com.example.surfacetest;
import android.app.Activity;
import android.content.Context;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.os.Bundle;
import android.util.Log;
import android.view.MotionEvent;
import android.view.Surface.OutOfResourcesException;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
public class BoardSurfaceActivity extends Activity {
/** Called when the activity is first created. */
private static final String TAG = BoardSurfaceActivity.class.getSimpleName();
private BoardSurface bS;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
bS = new BoardSurface(this);
setContentView(bS);
Log.d(TAG, "View added");
}
@Override
protected void onDestroy() {
Log.d(TAG, "Destroying...");
super.onDestroy();
}
@Override
protected void onStop() {
Log.d(TAG, "Stopping...");
super.onStop();
}
@Override
protected void onRestart() {
// TODO Auto-generated method stub
super.onRestart();
}
@Override
protected void onPause() {
Log.d(TAG, "Pausing...");
super.onPause();
}
@Override
protected void onResume() {
Log.d(TAG, "Resuming...");
super.onResume();
}
public class BoardSurface extends SurfaceView implements SurfaceHolder.Callback, Runnable {
final String TAG = BoardSurface.class.getSimpleName();
private Stuff stuff;
Thread t = null;
SurfaceHolder holder;
boolean isItOk = false;
public BoardSurface(Context context) {
super(context);
holder = getHolder();
getHolder().addCallback(this);
stuff = new Stuff(BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher), 50, 50);
t = new Thread(this);
setFocusable(true);
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
Log.d(TAG, "Surface created");
resume();
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
Log.d(TAG, "Surface Destroyed");
pause();
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
// delegating event handling to the droid
stuff.handleActionDown((int) event.getX(), (int) event.getY());
// check if in the lower part of the screen we exit
if (event.getY() > getHeight() - 50) {
((Activity) getContext()).finish();
} else {
Log.d(TAG, "Coords: x=" + event.getX() + ",y=" + event.getY());
}
}
if (event.getAction() == MotionEvent.ACTION_MOVE) {
// the gestures
if (stuff.isTouched()) {
// the droid was picked up and is being dragged
stuff.setX((int) event.getX());
stuff.setY((int) event.getY());
}
}
if (event.getAction() == MotionEvent.ACTION_UP) {
// touch was released
if (stuff.isTouched()) {
stuff.setTouched(false);
}
}
return true;
}
public void draw(Canvas canvas) {
canvas.drawColor(Color.BLUE);
stuff.draw(canvas);
}
@Override
public void run() {
while (isItOk) {
holder = getHolder();
if (holder.getSurface().isValid()) {
Canvas c = null;
try {
// make sure holder is updated
c = holder.lockCanvas(null);
if (c != null) {
synchronized (holder) {
draw(c);
}
}
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
if (c != null) {
holder.unlockCanvasAndPost(c);
}
}
}
}
}
public void pause() {
isItOk = false;
while (true) {
try {
t.join();
} catch (InterruptedException e) {
e.printStackTrace();
}
break;
}
t = null;
}
public void resume() {
if (t.getState() == Thread.State.TERMINATED) {
t = new Thread(this);
isItOk = true;
t.start();
} else {
isItOk = true;
t.start();
}
}
}
}
最奇怪的是我有这样的痕迹:
10-22 08:54:41.153: D/BoardSurface(17298): Surface created
10-22 08:54:41.394: E/memalloc(17298): /dev/pmem: Failed to map buffer size:24641536 offset:23699456 fd:56 Error: Invalid argument
10-22 08:54:41.394: E/gralloc(17298): Could not mmap handle 0x89e2b8, fd=56 (Invalid argument)
10-22 08:54:41.394: E/gralloc(17298): gralloc_register_buffer: gralloc_map failed
10-22 08:54:41.394: W/GraphicBufferMapper(17298): registerBuffer(0x89e2b8) failed -22 (Invalid argument)
10-22 08:54:41.394: E/GraphicBuffer(17298): unflatten: registerBuffer failed: Invalid argument (-22)
10-22 08:54:41.394: E/memalloc(17298): /dev/pmem: Failed to map buffer size:24641536 offset:23699456 fd:56 Error: Invalid argument
10-22 08:54:41.394: E/gralloc(17298): Could not mmap handle 0x89e2b8, fd=56 (Invalid argument)
10-22 08:54:41.394: E/libgenlock(17298): perform_lock_unlock_operation: GENLOCK_IOC_DREADLOCK failed (lockType0x1,err=Bad file number fd=56)
10-22 08:54:41.394: E/gralloc(17298): gralloc_lock: genlock_lock_buffer (lockType=0x2) failed
10-22 08:54:41.394: W/GraphicBufferMapper(17298): lock(...) failed -22 (Invalid argument)
10-22 08:54:41.394: W/Surface(17298): failed locking buffer (handle = 0x89e2b8)
10-22 08:54:41.424: E/SurfaceHolder(17298): Exception locking surface
10-22 08:54:41.424: E/SurfaceHolder(17298): java.lang.IllegalArgumentException
10-22 08:54:41.424: E/SurfaceHolder(17298): at android.view.Surface.nativeLockCanvas(Native Method)
10-22 08:54:41.424: E/SurfaceHolder(17298): at android.view.Surface.lockCanvas(Surface.java:236)
10-22 08:54:41.424: E/SurfaceHolder(17298): at android.view.SurfaceView$4.internalLockCanvas(SurfaceView.java:807)
10-22 08:54:41.424: E/SurfaceHolder(17298): at android.view.SurfaceView$4.lockCanvas(SurfaceView.java:787)
10-22 08:54:41.424: E/SurfaceHolder(17298): at com.example.surfacetest.BoardSurfaceActivity$BoardSurface.run(BoardSurfaceActivity.java:137)
10-22 08:54:41.424: E/SurfaceHolder(17298): at java.lang.Thread.run(Thread.java:841)
在我的跑步循环中
但这是棘手的部分!当我按back(非HOME)时,再次从菜单启动应用程序。它只是简单的工作
所以我真的不知道我错过了什么
附加信息:我正在HTC Sensation XE上运行,CM 10.2(安卓4.3.1)
编辑:
设备不是这里的问题。与另一台HTC在库存ROM上试用
编辑2:
即使我检查:
if (holder.getSurface().isValid())
也就是说lockcanvas()会成功如果它是真的,我会得到这个例外
10-22 10:11:27.688: E/SurfaceHolder(22195): Exception locking surface
10-22 10:11:27.688: E/SurfaceHolder(22195): java.lang.IllegalArgumentException
10-22 10:11:27.688: E/SurfaceHolder(22195): at android.view.Surface.nativeLockCanvas(Native Method)
10-22 10:11:27.688: E/SurfaceHolder(22195): at android.view.Surface.lockCanvas(Surface.java:236)
10-22 10:11:27.688: E/SurfaceHolder(22195): at android.view.SurfaceView$4.internalLockCanvas(SurfaceView.java:807)
10-22 10:11:27.688: E/SurfaceHolder(22195): at android.view.SurfaceView$4.lockCanvas(SurfaceView.java:787)
10-22 10:11:27.688: E/SurfaceHolder(22195): at com.example.surfacetest.BoardSurfaceActivity$BoardSurface.run(BoardSurfaceActivity.java:144)
10-22 10:11:27.688: E/SurfaceHolder(22195): at java.lang.Thread.run(Thread.java:841)
编辑3:
适用于Galaxy S4库存ROM和Emulator Intelx86 4.2.2@CinetiK:发布剩余的stacktrace HTC设备在旋转和表面测试方面臭名昭著。你试过这个吗:
如果上述步骤仍然无法修复错误,并且由于您使用的是CM10.2,我建议您首先在stock ROM上测试Android应用程序。虽然我并不反对定制安卓ROM(我自己也用过),但根据经验,定制ROM上的不明原因错误比库存ROM多。首先尝试一个库存ROM,看看是否仍然会出现相同的错误。没有帮助,在ICS上使用库存HTC ROM进行了尝试,但没有成功。
IllegalArgumentException
通常意味着方法失败,因为参数、上下文或引用字段为空。在您执行此操作之前,if(holder.getSurface().isValid())
您可以先执行此操作吗if(holder!=null)
然后在此检查之后执行其他代码。有点没有意义,因为如果holder为null,我无法使用getSurface()获取任何内容,所以。。。我会努力的,但我很肯定它会过去的。