Android安装卸载程序解析[转]-白红宇

Android安装卸载程序解析[转]

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发布时间：2019-06-12

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在Android安装卸载程序的源码中我们知道：

Java代码

< activity android:name=".PackageInstallerActivity">

< intent-filter>

< action android:name="android.intent.action.VIEW" />

< category android:name="android.intent.category.DEFAULT" />

< data android:scheme="content" />

< data android:scheme="file" />

< data android:mimeType="application/vnd.android.package-archive" />

< /intent-filter>

< /activity>

< activity android:name=".UninstallerActivity">

< intent-filter>

< action android:name="android.intent.action.VIEW" />

< action android:name="android.intent.action.DELETE" />

< category android:name="android.intent.category.DEFAULT" />

< data android:scheme="package" />

< /intent-filter>

< /activity>

Java代码

< activity android:name=".PackageInstallerActivity">

< intent-filter>

< action android:name="android.intent.action.VIEW" />

< category android:name="android.intent.category.DEFAULT" />

< data android:scheme="content" />

< data android:scheme="file" />

< data android:mimeType="application/vnd.android.package-archive" />

< /intent-filter>

< /activity>

< activity android:name=".UninstallerActivity">

< intent-filter>

< action android:name="android.intent.action.VIEW" />

< action android:name="android.intent.action.DELETE" />

< category android:name="android.intent.category.DEFAULT" />

< data android:scheme="package" />

< /intent-filter>

< /activity>

因为根据里面的权限我们可以从sd卡安装一个程序：

Java代码

String fileName = Environment.getExternalStorageDirectory() + "/myApp.apk";

Intent intent = new Intent(Intent.ACTION_VIEW);

intent.setDataAndType(Uri.parse("file://" + filePath),"application/vnd.android.package-archive");

//或者

//intent.setDataAndType(Uri.fromFile(new File(fileName)), "application/vnd.android.package-archive");

startActivity(intent);

Java代码

String fileName = Environment.getExternalStorageDirectory() + "/myApp.apk";

Intent intent = new Intent(Intent.ACTION_VIEW);

intent.setDataAndType(Uri.parse("file://" + filePath),"application/vnd.android.package-archive");

//或者

//intent.setDataAndType(Uri.fromFile(new File(fileName)), "application/vnd.android.package-archive");

startActivity(intent);

Android安装卸载程序的操作中要想卸载一个程序;

Java代码

Uri packageURI = Uri.parse("package:com.android.myapp");

Intent uninstallIntent = new Intent(Intent.ACTION_DELETE, packageURI);

startActivity(uninstallIntent);

Java代码

Uri packageURI = Uri.parse("package:com.android.myapp");

Intent uninstallIntent = new Intent(Intent.ACTION_DELETE, packageURI);

startActivity(uninstallIntent);

默认是不支持安装非市场程序的因此判断一下

Java代码

1. int result = Settings.Secure.getInt(getContentResolver(), Settings.Secure.INSTALL_NON_MARKET_APPS, 0);
2. if (result == 0) {
3. // show some dialog here
4. // ...
5. // and may be show application settings dialog manually
6. Intent intent = new Intent();
7. intent.setAction(Settings.ACTION_APPLICATION_SETTINGS);
8. startActivity(intent);
9. }
  
  注意：package:com.demo.CanavaCancel 这个形式是 package:程序完整的路径 (包名+程序名).
  
  关于卸载时传入包名为要卸载apk的内部的包名