Question

当布局从纵向更改为横向时，我需要更改活动的背景颜色。

我已经添加了显示权限，并尝试使用setActivityBackgroundColor中的onCreate来更改背景颜色。

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

@Override
public void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);
    Toast.makeText(this, "test", Toast.LENGTH_SHORT).show();

    int orientation = newConfig.orientation;
    if (orientation == Configuration.ORIENTATION_PORTRAIT){
        Log.d("tag", "Portrait");
        Toast.makeText(this, "portrait", Toast.LENGTH_SHORT).show();
         setActivityBackgroundColor(250);
    }
    else if (orientation == Configuration.ORIENTATION_LANDSCAPE){
        Log.d("tag", "Landscape");
        Toast.makeText(this, "Landscape", Toast.LENGTH_SHORT).show();

        setActivityBackgroundColor(150);
    }
    else{
        Log.w("tag", "other: " + orientation);
        setActivityBackgroundColor(50);
    }

}
public void setActivityBackgroundColor(int color) {
    View view = this.getWindow().getDecorView();
    view.setBackgroundColor(color);
}

Answer 1

将此行添加到清单中的活动标签中。这将允许活动在方向更改时更改配置

android:configChanges="orientation|keyboardHidden|screenSize

在手机方向上更改活动的背景颜色

1 个答案: