核心代码:
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(
    Uri.fromFile(new File(apkPath)), 
    "application/vnd.android.package-archive"
);
context.startActivity(intent);核心代码:
Uri packageURI = Uri.parse("package:" + packageName);
Intent intent = new Intent(Intent.ACTION_DELETE, packageURI);
context.startActivity(intent);上述代码中,packageName是目标APP的包名。
核心代码:
private static final String SILENT_INSTALL_CMD = "pm install -r ";String installCmd = SILENT_INSTALL_CMD + apkPath;// PM指令不支持中文
int result = -1;
DataOutputStream dos = null;
Process process = null;
try {
    process = Runtime.getRuntime().exec("su");
    dos = new DataOutputStream(process.getOutputStream());
    dos.writeBytes(installCmd + "\n");
    dos.flush();
    dos.writeBytes("exit\n");
    dos.flush();
    process.waitFor();
    result = process.exitValue();
} catch (Exception e) {
    e.printStackTrace();
} finally {
    try {
        if(dos != null) {
            dos.close();
        }
        if(process != null){
            process.destroy();
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
}
return result;核心代码:
// 如果要保留数据,需要加-k参数,但是卸载会不完全
private static final String SILENT_UNINSTALL_CMD = "pm uninstall ";String uninstallCmd = SILENT_UNINSTALL_CMD + appPackageName;
int result = -1;
DataOutputStream dos = null;
Process process = null;
try {
    process = Runtime.getRuntime().exec("su");
    dos = new DataOutputStream(process.getOutputStream());
    dos.writeBytes(uninstallCmd + "\n");
    dos.flush();
    dos.writeBytes("exit\n");
    dos.flush();
    process.waitFor();
    result = process.exitValue();
} catch (Exception e) {
    e.printStackTrace();
} finally {
    try {
        if(dos != null) {
            dos.close();
        }
        if(process != null){
            process.destroy();
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
}
return result;上述代码中,appPackageName是目标APP的包名。
更多内容可参考该页面内的install、uninstall、silentInstall和silentUninstall这四个方法。
原文地址:http://blog.csdn.net/risingwonderland/article/details/45537313