java - Android 内存泄漏堆 gc_concurrent

Question

有人能告诉我为什么会出现这些内存泄漏吗？它发生在启动画面需要自行完成时(基本上称为新 Activity )当我在菜单中单击按钮打开新页面(新 Activity )时，它再次发生。

记录猫内存泄漏:

启动画面到主菜单:

12-07 19:35:58.037: D/dalvikvm(2167): GC_CONCURRENT freed 499K, 21% free 4138K/5228K, paused 8ms+8ms, total 397ms
12-07 19:35:58.045: D/dalvikvm(2167): WAIT_FOR_CONCURRENT_GC blocked 170ms
12-07 19:35:58.116: I/dalvikvm-heap(2167): Grow heap (frag case) to 5.208MB for 1106044-byte allocation
12-07 19:35:58.365: D/dalvikvm(2167): GC_CONCURRENT freed 3K, 18% free 5215K/6312K, paused 8ms+33ms, total 246ms

新页面的主菜单:

12-07 19:38:30.974: D/dalvikvm(2167): GC_FOR_ALLOC freed 512K, 17% free 5272K/6304K, paused 119ms, total 151ms
12-07 19:38:31.034: I/dalvikvm-heap(2167): Grow heap (frag case) to 6.316MB for 1106044-byte allocation
12-07 19:38:31.376: D/dalvikvm(2167): GC_CONCURRENT freed 1129K, 30% free 5224K/7388K, paused 89ms+5ms, total 332ms

这是我的主要内容:

package com.example.prva;

import android.media.MediaPlayer;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.MotionEvent;


public class MainActivity extends Activity {

    MediaPlayer MPlayer; //da MPlayer mozemo koristiti bilo gdje
    protected boolean splashactive = true;
    protected int splashtime = 0;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.splash);        

        MPlayer = MediaPlayer.create(this, R.raw.splash); //dodavanje zvuka MPlayeru
        MPlayer.start();        //play

        Thread tajmer = new Thread(){
            public void run(){
                try{        
                    while(splashactive && splashtime<3000)
                        {
                            sleep(50);
                            splashtime=splashtime+50;
                        }
                    }
                 catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }               
                finally{
                    finish();                   
                    MPlayer.release();
                    startActivity(new Intent(MainActivity.this, Meni_Splash.class));                
                }       
            }           
        };
        tajmer.start(); 
    }       

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_DOWN) {
            splashactive = false;           

        }       
        return true;
    }

    @Override
    protected void onDestroy() {
        // TODO Auto-generated method stub
        super.onDestroy();
        MPlayer.release();
    }

    @Override
    protected void onPause() {
        // TODO Auto-generated method stub
        super.onPause();
        MPlayer.pause();
    }

    @Override
    protected void onResume() {
        // TODO Auto-generated method stub
        super.onResume();
        MPlayer.start();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

}

美尼飞溅:

package com.example.prva;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class Meni_Splash extends Activity{  


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);     

        Button btnv = (Button) findViewById(R.id.buttonv);
        btnv.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                startActivity(new Intent(Meni_Splash.this, button.class));              
            }
        });         
    }
}

我想不通问题出在哪里？请不要告诉我增加堆大小。提前谢谢大家!

Answer 1

除非您在其他地方持有对这些 Activity 之一的引用，否则我在这里看不到任何泄漏。例如 MPlayer 不是私有(private)的或 protected ，所以如果您在另一个实例中持有对它的引用，您可能会发生泄漏。

当涉及MediaPlayer 时，有垃圾收集是正常的。它会占用大量内存

即使启动了新的 Activity ，您的MainActivity 也会保留在内存中。如果您不希望在 startActivity();

之后调用 finish();