我正在做一个应用程序在这里我使用位图显示图像，图像显示良好，但因为这个类我在另一个class.pls看到我的代码以及如何解决这个问题任何最深的内存异常我...
public class DesignofatozActivity extends Activity {
BitmapDrawable sounddrawable,erasedrawable,backdrwable,fwddrwable,captiondrwable;
Bitmap soundbitmap,eraseBitmap,backbitmap,fwdbitmap,captionbitmap;
bitmapOrg,bitmapOrg1,bitmapOrg2,bitmapOrg3,bitmapOrg4,bitmapOrg5,bitmapOrg6;
MyView myview;
File f;
ImageView d1,d2,d3,d4,d5,d6;
public boolean action=false;
RelativeLayout relativeLayout,layout,relativeLayout2;
Button c1,c2,c3,c4,c5,c6,c7,c8;
MediaPlayer player;
MediaPlayer mediay2;
ImageView horn;
float screenHeight,screenWidth,screendensity;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setNoTitle();
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
DisplayMetrics displaymetrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);
screenHeight = displaymetrics.heightPixels;
screenWidth = displaymetrics.widthPixels;
screendensity = displaymetrics.densityDpi;
Log.i("screenHeight",""+screenHeight);
Log.i("screenWidth",""+screenWidth);
Log.i("screendensity",""+screendensity);
setContentView(R.layout.line);
relativeLayout=(RelativeLayout)findViewById(R.id.relative);
relativeLayout.setBackgroundColor(Color.WHITE);
relativeLayout2=(RelativeLayout)findViewById(R.id.relative2);
RelativeLayout.LayoutParams layoutrel2= (RelativeLayout.LayoutParams) relativeLayout2.getLayoutParams();
layoutrel2.height=(int)(25*(screenHeight/600));
int toplay=(int)(90*(screenHeight/600));
layout=new RelativeLayout(this);
RelativeLayout.LayoutParams lp=new RelativeLayout.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
lp.setMargins(0, toplay, 0,0);
layout.setLayoutParams(lp);
relativeLayout.addView(layout,lp);
int topmyvi=(int)(45*(screenHeight/600));
myview = new MyView(this);
myview.setId(004);
RelativeLayout.LayoutParams lp6 = new RelativeLayout.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
myview.setLayoutParams(lp6);
lp6.setMargins(0, topmyvi, 0,0);
relativeLayout.addView(myview,lp6);
ImageView I2=new ImageView(this);
if(captiondrwable!= null) {
captionbitmap.recycle();
captiondrwable= null;
}
captionbitmap=BitmapFactory.decodeStream(getResources().openRawResource(R.drawable.caption22_1));
captiondrwable = new BitmapDrawable(captionbitmap);
I2.setBackgroundDrawable(captiondrwable);
int left2=(int)(15*(screenWidth/1024));
int widthhh2=(int)(100*(screenWidth/1024));
int hifhtttt2=(int)(50*(screenHeight/600));
RelativeLayout.LayoutParams rlp2=new RelativeLayout.LayoutParams(widthhh2,hifhtttt2);
rlp2.setMargins(left2, topmyvi, 0, 0);
relativeLayout.addView(I2,rlp2);
ImageView b1=new ImageView(this);
if(erasedrawable!= null) {
eraseBitmap.recycle();
erasedrawable= null;
}
eraseBitmap=BitmapFactory.decodeStream(getResources().openRawResource(R.drawable.eraser_501));
erasedrawable = new BitmapDrawable(eraseBitmap);
b1.setBackgroundDrawable(erasedrawable);
int leftb1=(int)(650*(screenWidth/1024));
int topb1=(int)(10*(screenHeight/600));
int widtb1=(int)(100*(screenWidth/1024));
int hightb1=(int)(100*(screenHeight/600));
RelativeLayout.LayoutParams rlp3=new RelativeLayout.LayoutParams(widtb1,hightb1);
rlp3.setMargins(leftb1, topb1, 0, 0);
relativeLayout.addView(b1,rlp3);
b1.setOnClickListener(new OnClickListener() {
// @Override
public void onClick(View v) {
// TODO Auto-generated method stub
try{
mBitmap.eraseColor(android.graphics.Color.TRANSPARENT);
Canvas Canvas=new Canvas(mBitmap);
action=true;
myview.onDraw(Canvas);
}catch(IllegalStateException ie){
ie.printStackTrace();
}
}
});
int lefth1=(int)(830*(screenWidth/1024));
int toph1=(int)(35*(screenHeight/600));
int width1=(int)(60*(screenWidth/1024));
int highth1=(int)(60*(screenHeight/600));
horn=new ImageView(this);
if(sounddrawable!= null) {
soundbitmap.recycle();
sounddrawable= null;
}
soundbitmap=BitmapFactory.decodeStream(getResources().openRawResource( R.drawable.horn));
sounddrawable = new BitmapDrawable(soundbitmap);
horn.setBackgroundDrawable(sounddrawable);
RelativeLayout.LayoutParams hn=new RelativeLayout.LayoutParams(width1,highth1);
hn.setMargins(lefth1,toph1,0,0);
relativeLayout.addView(horn,hn);
horn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
if(mediay2==null)
{
mediay2 = MediaPlayer.create(DesignofatozActivity.this, R.raw.hwprepsheets);
}
mediay2.start();
if(mediay2!=null)
{
}
}
});
ImageView next=(ImageView)findViewById(R.id.imv1a);
if(fwddrwable!= null) {
fwdbitmap.recycle();
fwddrwable= null;
}
fwdbitmap=BitmapFactory.decodeStream(getResources().openRawResource(R.drawable.next_50));
fwddrwable = new BitmapDrawable(fwdbitmap);
next.setBackgroundDrawable(fwddrwable);
RelativeLayout.LayoutParams layoutnxt= (RelativeLayout.LayoutParams) next.getLayoutParams();
layoutnxt.height=(int)(30*(screenHeight/600));
layoutnxt.width=(int)(50*(screenWidth/1024));
next.setOnClickListener(new OnClickListener() {
// @Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Log.i("next","next");
Intent i =new Intent(DesignofatozActivity.this,Dots.class);
startActivity(i);
}
});
ImageView back=(ImageView)findViewById(R.id.back);
if(backdrwable!= null) {
backbitmap.recycle();
backdrwable= null;
}
backbitmap=BitmapFactory.decodeStream(getResources().openRawResource(R.drawable.back1_50));
backdrwable = new BitmapDrawable(backbitmap);
back.setBackgroundDrawable(backdrwable);
RelativeLayout.LayoutParams layoutbak= (RelativeLayout.LayoutParams) back.getLayoutParams();
layoutbak.height=(int)(30*(screenHeight/600));
layoutbak.width=(int)(50*(screenWidth/1024));
back.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
// TODO Auto-generated method stub
Intent i =new Intent(DesignofatozActivity.this,Slantlines.class);
startActivity(i);
}
});
mPaint = new Paint();
mPaint.setAntiAlias(true);
mPaint.setDither(true);
//mPaint.setColor(0xFFFF0000);
mPaint.setColor(Color.BLACK);
mPaint.setStyle(Paint.Style.STROKE);
mPaint.setStrokeJoin(Paint.Join.ROUND);
mPaint.setStrokeCap(Paint.Cap.ROUND);
mPaint.setStrokeWidth(6);
}
private void setNoTitle() {
// TODO Auto-generated method stub
requestWindowFeature(Window.FEATURE_NO_TITLE);
}
private Paint mPaint;
private Bitmap mBitmap;
public void colorChanged(int color) {
mPaint.setColor(color);
}
public class MyView extends View
{
private Canvas mCanvas;
private Path mPath;
private Paint mBitmapPaint;
public MyView(Context context) {
super(context);
// TODO Auto-generated constructor stub
mPath = new Path();
mBitmapPaint = new Paint(Paint.DITHER_FLAG);
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
if (mBitmap != null) {
mBitmap.recycle();
mBitmap=null;
}
mBitmap = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
mCanvas = new Canvas(mBitmap);
mCanvas.setBitmap(mBitmap);
}
@Override
protected void onDraw(Canvas canvas) {
if(action)
{
invalidate();
}
Paint painto = new Paint();
painto.setAntiAlias(true);
painto.setStrokeWidth(3);
painto.setStyle(Paint.Style.FILL);
int leftx1=(int)(15*(screenWidth/1024));
int leftx2=(int)(1010*(screenWidth/1024));
int topy1=(int)(60*(screenHeight/600));
int topy2=(int)(530*(screenHeight/600));
canvas.drawLine(leftx1, topy1, leftx2, topy1, painto);
canvas.drawLine(leftx1, topy1, leftx1, topy2, painto);
canvas.drawLine(15, topy2, leftx2, topy2, painto);
canvas.drawLine(leftx2, topy1, leftx2, topy2, painto);
bitmapOrg = BitmapFactory.decodeResource(getResources(),
R.drawable.circles1_4);
int leftorg=(int)(150*(screenWidth/1024));
int toporg=(int)(110*(screenHeight/600));
canvas.drawBitmap(bitmapOrg, leftorg, toporg, painto);
bitmapOrg.recycle();
bitmapOrg=null;
bitmapOrg1 = BitmapFactory.decodeResource(getResources(),
R.drawable.circles1_5);
int leftorg1=(int)(430*(screenWidth/1024));
int toporg1=(int)(130*(screenHeight/600));
canvas.drawBitmap(bitmapOrg1, leftorg1,toporg1, painto);
bitmapOrg1.recycle();
bitmapOrg1=null;
bitmapOrg2 = BitmapFactory.decodeResource(getResources(),
R.drawable.circles1_6);
int leftorg2=(int)(650*(screenWidth/1024));
canvas.drawBitmap(bitmapOrg2, leftorg2,toporg, painto);
bitmapOrg2.recycle();
bitmapOrg2=null;
bitmapOrg3 = BitmapFactory.decodeResource(getResources(),
R.drawable.circles1_1);
int leftorg3=(int)(170*(screenWidth/1024));
int toporg3=(int)(350*(screenHeight/600));
canvas.drawBitmap(bitmapOrg3, leftorg3,toporg3, painto);
bitmapOrg3.recycle();
bitmapOrg3=null;
bitmapOrg4 = BitmapFactory.decodeResource(getResources(),
R.drawable.circles1_3);
int leftorg4=(int)(680*(screenWidth/1024));
canvas.drawBitmap(bitmapOrg4, leftorg4,toporg3, painto);
bitmapOrg4.recycle();
bitmapOrg4=null;
bitmapOrg5 = BitmapFactory.decodeResource(getResources(),
R.drawable.circles1_2);
int leftorg5=(int)(400*(screenWidth/1024));
int toporg5=(int)(300*(screenHeight/600));
canvas.drawBitmap(bitmapOrg5, leftorg5,toporg5, painto);
bitmapOrg5.recycle();
bitmapOrg5=null;
Paint paint1 = new Paint();
paint1.setAntiAlias(true);
paint1.setColor(Color.BLACK);
paint1.setStrokeWidth(3);
paint1.setStyle(Paint.Style.FILL);
paint1.setTextSize(13);
canvas.drawText("Get ready to write place your pen on the dot and follow direction ", 120, 20, paint1);
canvas.drawText("indicated by the arrow . ", 120, 38, paint1);
Paint p = new Paint();
p.setAntiAlias(true);
p.setTextSize(120);
p.setColor(Color.LTGRAY);
Typeface font = Typeface.createFromAsset(getAssets(), "font/KINDTRG.TTF");
p.setTypeface(font);
canvas.drawBitmap(mBitmap, 0, 0, mBitmapPaint);
canvas.drawPath(mPath, mPaint);
} private float mX, mY;
private final float TOUCH_TOLERANCE = 2;
private void touch_start(float x, float y) {
mPath.reset();
mPath.moveTo(x, y);
mX = x;
mY = y;
}
private void touch_move(float x, float y) {
float dx = Math.abs(x - mX);
float dy = Math.abs(y - mY);
if (dx >= TOUCH_TOLERANCE || dy >= TOUCH_TOLERANCE) {
mPath.quadTo(mX, mY, (x + mX)/2, (y + mY)/2);
mX = x;
mY = y;
}
}
private void touch_up() {
mPath.lineTo(mX, mY);
// commit the path to our offscreen
mCanvas.drawPath(mPath, mPaint);
// kill this so we don't double draw
mPath.reset();
}
@Override
public boolean onTouchEvent(MotionEvent event) {
float x = event.getX();
y = event.getY();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
touch_start(x, y);
invalidate();
break;
case MotionEvent.ACTION_MOVE:
touch_move(x, y);
invalidate();
break;
case MotionEvent.ACTION_UP:
touch_up();
invalidate();
break;
}
return true;
}
}
public void clearAllResources() {
// Set related variables null
System.gc();
Runtime.getRuntime().gc();
}
@Override
protected void onPause() {
if (mediay2 != null){
mediay2.stop();
mediay2.release();
mediay2=null;
}
clearAllResources();
super.onPause();
}
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
System.gc();
Runtime.getRuntime().gc();
unbindDrawables(findViewById(R.id.relative));
}
private void unbindDrawables(View view) {
// TODO Auto-generated method stub
if (view.getBackground() != null) {
view.getBackground().setCallback(null);
}
if (view instanceof ViewGroup) {
for (int i = 0; i < ((ViewGroup) view).getChildCount(); i++) {
unbindDrawables(((ViewGroup) view).getChildAt(i));
}
((ViewGroup) view).removeAllViews();
}
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
}
}
答案 0 :(得分：4)
您使用的内存堆超过了gcc允许的大小。您必须使用slaced bitmaps 要么 清单添加应用程序中的+3.0
android：largeHeap =“true”分配更多堆大小。
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
android:largeHeap="true">...
答案 1 :(得分：0)
试试这个
获得位图后，在使用后回收位图，这将解决一些问题。
Bitmap finalImage;
finalImage.recycle();
或尝试onResume（）
System.gc();
答案 2 :(得分：0)
我建议你看一下这个主题：Strange out of memory issue while loading an image to a Bitmap object
这是答案：
public Bitmap readAssetsBitmap(String filename) throws IOException {
try {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inPurgeable = true;
Bitmap bitmap = BitmapFactory.decodeStream(assets.open(filename), null, options);
if(bitmap == null) {
throw new IOException("File cannot be opened: It's value is null");
}
else {
return bitmap;
}
} catch (IOException e) {
throw new IOException("File cannot be opened: " + e.getMessage());
}
}
请记住回收位图，并在使用它们确保get GCed后将它们设置为null。
注意：您不应拨打System.gc();
我希望这会有所帮助。