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android resizeableactivity與windowmanager協作

小樊
97
2024-12-06 22:41:22
欄目: 編程語言

在Android中,ResizableActivity并不是一個官方的類或方法。我猜您可能是想問androidx.activity.app.ResizableActivity,這是一個可調整大小的Activity類,它允許用戶通過拖動窗口的標題欄來改變Activity的大小。

要使ResizableActivityWindowManager協同工作,您需要執行以下步驟:

  1. AndroidManifest.xml中聲明您的Activity為ResizableActivity
<activity
    android:name="com.example.myapplication.ResizableActivity"
    android:resizeMode="normal|large|small|fill">
</activity>
  1. res/layout目錄下創建一個布局文件(例如activity_resizable.xml),并添加所需的UI組件。

  2. ResizableActivityonCreate方法中,設置WindowManager以允許調整窗口大?。?/p>

@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();

    // 設置窗口大小
    windowManager.setAppWindowToken(getWindow().getWindowToken());
    windowManager.addView(yourCustomView, new WindowManager.LayoutParams(width, height));
}
  1. onResumeonPause方法中,分別添加和移除自定義視圖:
@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,確保釋放資源:
@Override
protected void onDestroy() {
    super.onDestroy();
    WindowManager windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
    windowManager.removeView(yourCustomView);
}

這樣,您的ResizableActivity就可以與WindowManager協同工作,允許用戶通過拖動窗口的標題欄來改變Activity的大小。請注意,您需要根據實際需求修改代碼中的示例值。

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