android - 按钮 OnClickListener 只工作一次 android

Question

我有下面的 Activity 。当我运行该应用程序时，它只工作一次，当我第一次按下 storeBTN 或 retrieveBTN 时，我看到 Textview 没有变化，也没有日志关于运行 store() 和 retrieve() 函数。

public class MainActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    Button storeBTN = (Button) findViewById(R.id.button);
    storeBTN.setOnClickListener(new View.OnClickListener(){

        @Override
        public void onClick(View v) {
            EditText et = (EditText) findViewById(R.id.editText);
            int i = Integer.parseInt(et.getText().toString());
            store(i);
        }
    });
    Button retrieveBTN = (Button) findViewById(R.id.button2);
    retrieveBTN.setOnClickListener(new View.OnClickListener(){

        @Override
        public void onClick(View v) {
            retrieve();
        }
    });

}
public void store(int newHighScore){
    Log.d("Meeeeee", "store: "+newHighScore);
    setContentView(R.layout.activity_main);
    SharedPreferences sharedPref = this.getPreferences(this.MODE_APPEND);
    SharedPreferences.Editor editor = sharedPref.edit();
    editor.putInt(getString(R.string.saved_high_score), newHighScore);
    boolean b = editor.commit();
    Log.d("Meeee", "store: commited? "+b);
    retrieve();
    return;
}
public void retrieve(){
    SharedPreferences sharedPref = this.getPreferences(this.MODE_APPEND);
    int defaultValue = getResources().getInteger(R.integer.saved_high_score_default);
    long highScore = sharedPref.getInt(getString(R.string.saved_high_score), defaultValue);
    Log.d("meeee", "retrieve: "+highScore+" in mode: "+this.MODE_APPEND);
    TextView scoreTV = (TextView) findViewById(R.id.textView);
    scoreTV.setText(highScore+"");
    return;
}

}

Answer 1

删除

setContentView(R.layout.activity_main);

来自 store() 方法