Question

如何在用户取消应用程序（.apk文件）安装时检测到这种情况？

我的应用程序以编程方式安装其他应用程序，但用户可以取消安装过程。在安装过程中，用户会看到如下对话框：“替换应用程序。您正在安装的应用程序将替换另一个应用程序”。然后是一个对话框“你想安装这个应用程序吗？”。如果用户按下“安装”，则生成ACTION_PACKAGE_...广播。但是如何检测用户是否按下“取消”？

Answer 1

public class ApplicationInstaller extends Activity {

    private final static int createState = 1, installState = 2;
    private int activityState = 0, counter = 0;
    private ApplicationInstallerReceiver aIR;
    private String appName, appPath;
    private boolean result;

    //---------------------------------------------------------------------------------------------
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.app_installer);
        if (activityState == 0) {
            this.activityState = ApplicationInstaller.createState;
            this.appName = this.getIntent().getStringExtra("AppName");
            this.appPath = this.getIntent().getStringExtra("AppPath");
            if (this.appName == null || this.appPath == null) {
                finish();
            }
        }
    }

    //---------------------------------------------------------------------------------------------
    @Override
    public void onStart() {
        super.onStart();
        if (this.activityState == ApplicationInstaller.createState) {
            activityState = ApplicationInstaller.installState;
            aIR = new ApplicationInstallerReceiver();
            IntentFilter ifilter = new IntentFilter();
            ifilter.addAction(Intent.ACTION_PACKAGE_ADDED);
            ifilter.addAction(Intent.ACTION_PACKAGE_CHANGED);
            ifilter.addAction(Intent.ACTION_PACKAGE_INSTALL);
            ifilter.addAction(Intent.ACTION_PACKAGE_REPLACED);
            ifilter.addDataScheme("package");
            registerReceiver(aIR, ifilter);
            Intent intent = new Intent(Intent.ACTION_VIEW);
            intent.setDataAndType(Uri.fromFile(new File(appPath)), "application/vnd.android.package-archive");
            try {
                startActivity(intent);
            } catch (Exception e) {
                result = false;
                finish();
            }
        } else {
            finish();
        }
    }

    //---------------------------------------------------------------------------------------------
    @Override
    protected void onResume() {
        super.onResume();
        counter++;
        if (counter == 2) {
            finish();
        }
    }

    //---------------------------------------------------------------------------------------------
    @Override
    protected void onDestroy() {
        super.onDestroy();
        if (aIR != null) {
            this.unregisterReceiver(aIR);
        }
        if (activityState == installState) {
            Intent intent = new Intent(DeviceSoftWareManager.installerAction);
            intent.putExtra("Result", this.result);
            sendBroadcast(intent);
        }
    }

    //---------------------------------------------------------------------------------------------
    class ApplicationInstallerReceiver extends BroadcastReceiver {
        @Override
        public void onReceive(Context context, Intent intent) {
            result = true;
            ApplicationInstaller.this.finish();
        }
    }
}

如果用户选择“安装”，则会生成Intent.ACTION_PACKAGE...个动作。

如果用户选择“不安装”，则活动会在没有Intent.ACTION_PACKAGE...操作的情况下退出。

这意味着“用户已取消安装”。

Answer 2

我认为您无法检测用户是否卸载或未安装应用，但您可以在启动应用时或执行操作后检查是否已安装所需的其他应用

如何检测用户取消程序（“.apk”）安装时的情况？

2 个答案: