ActivityManager.setWatchHeapLimitを使用する方法（）の公式文書によるとheap_limitに

Question

を見て：私はHEAP_LIMITはtriggered.Butは、それが働いていなかったようだし、ここにあるだろうかどうかを確認するためにデモを書いた https://developer.android.com/reference/android/app/ActivityManager.html#setWatchHeapLimit(long)

私のコード。

public class ActivityManagerActivity extends Activity 
{ 

    private String TAG = this.getClass().getName(); 

    private Button btnIncreaseMemory; 
    private BroadcastReceiver receiver; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) 
    { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_activity_manager); 
     registerBroadcast(); 
     registerHeapLimit(); 
     iniComponent(); 
    } 

    private void iniComponent() 
    { 
     btnIncreaseMemory = (Button) findViewById(R.id.btnIncreaseMemory); 
     btnIncreaseMemory.setOnClickListener(new View.OnClickListener() 
     { 
      @Override 
      public void onClick(View view) 
      { 
       Bitmap bitmap = ((BitmapDrawable) getDrawable(R.mipmap.image)).getBitmap(); 
       Log.e(TAG, "bitmap size:" + bitmap.getByteCount()); 
       ((ImageView) findViewById(R.id.ivBitmap)).setImageBitmap(bitmap); 
      } 
     }); 
    } 

    @Override 
    public void onDestroy() 
    { 
     super.onDestroy(); 
     ActivityManager activityManager = (ActivityManager) getSystemService(ACTIVITY_SERVICE); 
     activityManager.clearWatchHeapLimit(); 

     if (receiver != null) 
     { 
      unregisterReceiver(receiver); 
      receiver = null; 
     } 
    } 

    private void registerHeapLimit() 
    { 
     ActivityManager activityManager = (ActivityManager) getSystemService(ACTIVITY_SERVICE); 
     activityManager.setWatchHeapLimit(2); 
    } 

    private void registerBroadcast() 
    { 
     IntentFilter filter = new IntentFilter(); 
     filter.addAction("ACTION_REPORT_HEAP_LIMIT"); 
     receiver = new BroadcastReceiver() 
     { 
      @Override 
      public void onReceive(Context context, Intent intent) 
      { 
       // not be called 
       Toast.makeText(ActivityManagerActivity.this, "get msg", Toast.LENGTH_SHORT).show(); 
      } 
     }; 
     registerReceiver(receiver, filter); 
    } 
} 

私は、コードを変更します。

public class ActivityManagerActivity extends Activity 
{ 

    private String TAG = this.getClass().getName(); 

    private Button btnIncreaseMemory; 
    private BroadcastReceiver receiver; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) 
    { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_activity_manager); 
     registerBroadcast(); 
     registerHeapLimit(); 
     iniComponent(); 
    } 

    int index = 0; 

    private void iniComponent() 
    { 
     btnIncreaseMemory = (Button) findViewById(R.id.btnIncreaseMemory); 
     btnIncreaseMemory.setOnClickListener(new View.OnClickListener() 
     { 
      @Override 
      public void onClick(View view) 
      { 
       if(index == 0) 
       { 
        Bitmap bitmap = ((BitmapDrawable) getDrawable(R.mipmap.img6802)).getBitmap(); 
        Log.e(TAG, "bitmap1 size:" + bitmap.getByteCount()); 
        ((ImageView) findViewById(R.id.ivBitmap)).setImageBitmap(bitmap); 
        index = 1; 
       } 
       else if(index == 1) 
       { 
        Bitmap bitmap = ((BitmapDrawable) getDrawable(R.mipmap.img6803)).getBitmap(); 
        Log.e(TAG, "bitmap2 size:" + bitmap.getByteCount()); 
        ((ImageView) findViewById(R.id.ivBitmap2)).setImageBitmap(bitmap); 
        index = 2; 
       } 
       else if(index == 2) 
       { 
        Bitmap bitmap = ((BitmapDrawable) getDrawable(R.mipmap.img6804)).getBitmap(); 
        Log.e(TAG, "bitmap3 size:" + bitmap.getByteCount()); 
        ((ImageView) findViewById(R.id.ivBitmap3)).setImageBitmap(bitmap); 
        index = 3; 
       } 
      } 
     }); 
    } 

    @Override 
    public void onDestroy() 
    { 
     super.onDestroy(); 
     ActivityManager activityManager = (ActivityManager) getSystemService(ACTIVITY_SERVICE); 
     activityManager.clearWatchHeapLimit(); 

     if (receiver != null) 
     { 
      unregisterReceiver(receiver); 
      receiver = null; 
     } 
    } 

    private void registerHeapLimit() 
    { 
     ActivityManager activityManager = (ActivityManager) getSystemService(ACTIVITY_SERVICE); 
     activityManager.setWatchHeapLimit(157286400);//150MB 
    } 

    private void registerBroadcast() 
    { 
     IntentFilter filter = new IntentFilter(); 
     filter.addAction("ACTION_REPORT_HEAP_LIMIT"); 
     receiver = new BroadcastReceiver() 
     { 
      @Override 
      public void onReceive(Context context, Intent intent) 
      { 
       // not be called 
       Toast.makeText(ActivityManagerActivity.this, "get msg", Toast.LENGTH_SHORT).show(); 
      } 
     }; 
     registerReceiver(receiver, filter); 
    } 
} 

しかしまだ通知は、さえ使用-ヒープは、私が設定した限度の150メガバイトを可決しました。

Answer 1

ボタンをクリックしたときに、となる妥当な値にpss制限を増やしてください。

あなたが提供した値（2k）は小さすぎます。あなたがボタンをクリックする前であってもあなたの活動がこの値を横切ると思います。