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android resizeableactivity与windowmanager协作

小樊
81
2024-12-06 22:41:22
栏目: 编程语言

在Android中,ResizableActivity并不是一个官方的类或方法。我猜您可能是想问androidx.activity.app.ResizableActivity,这是一个可调整大小的Activity类,它允许用户通过拖动窗口的标题栏来改变Activity的大小。

要使ResizableActivityWindowManager协同工作,您需要执行以下步骤:

  1. AndroidManifest.xml中声明您的Activity为ResizableActivity
<activity
    android:name="com.example.myapplication.ResizableActivity"
    android:resizeMode="normal|large|small|fill">
</activity>
  1. res/layout目录下创建一个布局文件(例如activity_resizable.xml),并添加所需的UI组件。

  2. ResizableActivityonCreate方法中,设置WindowManager以允许调整窗口大小:

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

    WindowManager windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
    WindowMetrics windowMetrics = windowManager.getCurrentWindowMetrics();
    int width = windowMetrics.getBounds().width();
    int height = windowMetrics.getBounds().height();

    // 设置窗口大小
    windowManager.setAppWindowToken(getWindow().getWindowToken());
    windowManager.addView(yourCustomView, new WindowManager.LayoutParams(width, height));
}
  1. onResumeonPause方法中,分别添加和移除自定义视图:
@Override
protected void onResume() {
    super.onResume();
    WindowManager windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
    windowManager.addView(yourCustomView, new WindowManager.LayoutParams(width, height));
}

@Override
protected void onPause() {
    super.onPause();
    WindowManager windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
    windowManager.removeView(yourCustomView);
}
  1. onDestroy方法中,确保释放资源:
@Override
protected void onDestroy() {
    super.onDestroy();
    WindowManager windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
    windowManager.removeView(yourCustomView);
}

这样,您的ResizableActivity就可以与WindowManager协同工作,允许用户通过拖动窗口的标题栏来改变Activity的大小。请注意,您需要根据实际需求修改代码中的示例值。

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