參考網站:https://blog.csdn.net/Gods_magic/article/details/85255860
內存泄漏的危害
內存泄漏的危害就是會使虛擬機佔用內存過高,導致OOM(內存溢出),使程序異常。
對於一個Android應用來說,打開一個Activity,使用完後關閉,出現內存泄漏;又打開,又關閉,又泄漏;幾次之後,程序佔用的內存就會超過系統的限制,導致FC。
public class TestActivity extends AppCompatActivity {
private Handler handler = new Handler();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_test);
handler.postDelayed(new Runnable() {
@Override
public void run() {
}
},10000);
finish();
}
}
public static class MyHandler extends Handler{
private WeakReference<TestActivity> mActivity;
public MyHandler(TestActivity activity){
mActivity = new WeakReference(activity);
}
@Override
public void handleMessage(Message msg) {
if (mActivity.get() == null) {
return;
}
//接受到消息的處理
}
}