private boolean isUnknownSourcesEnabled() { return Settings.Secure.getInt(getContentResolver(), "install_non_market_apps", 0) > 0; }
时间: 2024-04-21 13:28:17 浏览: 182
这段代码是一个Android应用程序中的私有方法,用于检查设备是否允许从未知来源安装应用程序。具体来说,该方法使用Settings.Secure类的getInt()方法获取名为"install_non_market_apps"的设置值,并将其与0进行比较。如果设置值大于0,则表示设备允许从未知来源安装应用程序。
需要注意的是,"install_non_market_apps"设置仅在Android 4.0及以上版本中可用。在较早的Android版本中,该设置的名称为"unknown_sources"。同时,需要确保应用程序已经声明了android.permission.WRITE_SETTINGS权限,以便获取和修改设备的系统设置。
该方法通常用于应用程序安装流程中,用于检查设备是否允许从未知来源安装应用程序,并据此决定是否启动应用程序的安装流程。
相关问题
fun subscribeWidgetMenuPosition(){ contentResolver.registerContentObserver( Settings.Secure.getUriFor("wallpaper_menu_x_position"), true, object : ContentObserver(Handler()) { override fun onChange(selfChange: Boolean) { val widgetMenuState = Settings.Secure.getInt(contentResolver, "widget_menu_state") val widgetMenuXPosition = Settings.Secure.getInt(contentResolver, "widget_menu_x_position") Log.i(TAG, "onChange: widget_menu_state=$widgetMenuState, widget_menu_x_position=$widgetMenuXPosition") } }) } 转换为java代码
Here's the Java code equivalent to the given Kotlin code:
```
private void subscribeWidgetMenuPosition() {
getContentResolver().registerContentObserver(
Settings.Secure.getUriFor("wallpaper_menu_x_position"),
true,
new ContentObserver(new Handler()) {
@Override
public void onChange(boolean selfChange) {
int widgetMenuState = Settings.Secure.getInt(
getContentResolver(),
"widget_menu_state"
);
int widgetMenuXPosition = Settings.Secure.getInt(
getContentResolver(),
"widget_menu_x_position"
);
Log.i(TAG, "onChange: widget_menu_state=" + widgetMenuState +
", widget_menu_x_position=" + widgetMenuXPosition);
}
}
);
}
```
fun subscribeWidgetMenuState(){ context.contentResolver.registerContentObserver( Settings.Secure.getUriFor("widget_menu_state"), true, object : ContentObserver(Handler()) { override fun onChange(selfChange: Boolean) { val widgetMenuState = Settings.Secure.getInt(contentResolver, "widget_menu_state") val widgetMenuXPosition = Settings.Secure.getInt(contentResolver, "widget_menu_x_position") Log.i(TAG, "onChange: widget_menu_state=$widgetMenuState, widget_menu_x_position=$widgetMenuXPosition") } }) } 将这段代码转换成java
以下是将 Kotlin 代码转换成 Java 代码后的实现:
```java
public void subscribeWidgetMenuState() {
getContentResolver().registerContentObserver(
Settings.Secure.getUriFor("widget_menu_state"),
true,
new ContentObserver(new Handler()) {
@Override
public void onChange(boolean selfChange) {
int widgetMenuState = Settings.Secure.getInt(getContentResolver(),
"widget_menu_state");
int widgetMenuXPosition = Settings.Secure.getInt(getContentResolver(),
"widget_menu_x_position");
Log.i(TAG, "onChange: widget_menu_state=" + widgetMenuState
+ ", widget_menu_x_position=" + widgetMenuXPosition);
}
});
}
```
这段 Java 代码与 Kotlin 代码的功能是完全相同的,只是语法略有不同。
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