int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
        Log.d("TAG", "Max memory is " + maxMemory + "KB");
        Log.d("TAG", "Max memory is " + (maxMemory / 1024) + "MB");

adb -s 192.168.3.104:5555 shell su -c cat /system/build.prop|findstr.exe heapgrowthlimit

adb -s 192.168
 
.3.104:5555 shell "su -c cat /system/build.prop|grep heapgrowthlimit"

軟體在最前面的時候可以分配更多

超出限制會報

AndroidRuntime: FATAL EXCEPTION: main   
                                                            java.lang
 
.OutOfMemoryError

低記憶體的手機跑下面這個軟體可能會OOM，應採用類似執行緒池一樣的方式

public class MainActivity extends AppCompatActivity {

    private int[] piclist = {R.mipmap.img,
            R.mipmap.img_1,
            R.mipmap.img_2,
            R.mipmap.img_3,
            R.mipmap.img_4,
            R.mipmap.img
    };

    ImageView imageView1;
    ImageView imageView2;
    ImageView imageView3;
    private
 
 Random random = new Random();
    final Handler handler = new Handler();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        imageView1=(ImageView)findViewById(R.id.image1);
        imageView2=(ImageView)findViewById(R.id.image2);
        imageView3=(ImageView)findViewById(R.id.image3);
        //記憶體限制
        int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
        Log.d("TAG", "Max memory is " + maxMemory + "KB");
        Log.d("TAG", "Max memory is " + (maxMemory / 1024) + "MB");
        setTitle((maxMemory / 1024) + "MB");


        handler.postDelayed(new Runnable() {
            @Override
            public void run() {
                imageView1.setImageResource(piclist[random.nextInt(piclist.length)]);
                imageView2.setImageResource(piclist[random.nextInt(piclist.length)]);
                imageView3.setImageResource(piclist[random.nextInt(piclist.length)]);
                handler.postDelayed(this,5);
            }
        }, 3000);
    }

}