android 安装APK 卸载程序 判断设备是否有存储卡 全屏显示

1 打开内置的APK Installer来安装APK(需要将Application Setting中的Unknown sources打开)

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Intent intent = new Intent(); intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); intent.setAction(android.content.intent.ACTION_VIEW); FILE f = new File(apkFileName); //need android.permission.INSTALL_PACKAGES intent.setDataAndType(Uri.from(f),"application/vnd.android.package-archive"); startActivity(intent);

 

卸载程序

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Uri packageURI = Uri.parse("package:com.android.myapp");      Intent uninstallIntent = new Intent(Intent.ACTION_DELETE, packageURI);      startActivity(uninstallIntent);

 

2 判断设备是否有存储卡

1	import static android.os.Environment.*;

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boolean existSDCard = false; if(getExternalStorageState().equals(MEDIA_MOUNTED))      existSDCard = true;

 

3）全屏显示

//必须在setContentView之前调用全屏显示

requestWindowFeature(Window.FEATURE_NO_TITLE);

getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,

WindowManager.LayoutParams.FLAG_FULLSCREEN);

setContentView(R.layout.main);