Question

我正在尝试将App A的MainActivity中的意图发送到App B的MainActivity，然后将App B带到前面，但在启动App A时，我收到以下错误：

引起：android.content.ActivityNotFoundException：无活动发现处理Intent {act = com.example.app.MainActivity pkg = com.example.app（有额外内容）}

首先，我正在启动App B，然后启动App A.

如何将应用A的MainActivity中的意图发送到应用B的MainActivity，然后将应用B带到前端？

App A MainActivity：

package com.mysender;


import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;


public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        String pdfString = "Hello World";

        final Intent intent= new Intent("com.example.app.MainActivity");
        intent.setPackage("com.example.app");
        intent.putExtra("path", pdfString);
        startActivity(intent);


    }
}

App A Manifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.mysender">

    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity"
                  android:launchMode="singleTop">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

App B MainActivity：

package com.example.app;

import android.app.Activity;
import android.os.Bundle;

public class MainActivity extends Activity {

    private WebView mWebView;
    //private BroadcastReceiver myReceiver;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Bundle data = getIntent().getExtras();
        if(data!=null){
            String myString = data.getString("Id");
            Toast.makeText(this,"Data Received from External App: " ,  Toast.LENGTH_SHORT).show();

        }

}

App B Manifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.app" >
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@android:style/Theme.NoTitleBar.Fullscreen" >
        <activity
            android:name="com.example.app.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
</manifest>

错误：

引起：android.content.ActivityNotFoundException：无活动发现处理Intent {act = com.example.app.MainActivity pkg = com.example.app（有额外内容）}

    final Intent intent= new Intent("com.example.app.MainActivity");
    intent.setPackage("com.example.app");
    intent.putExtra("path", pdfString);
    startActivity(intent);

引起：android.content.ActivityNotFoundException：无法找到显性活动类 {com.example.app/com.example.app.MainActivity};你宣布这个吗？ AndroidManifest.xml中的活动？

final Intent intent= new Intent();
intent.setComponent(new ComponentName("com.example.app", "com.example.app.MainActivity"));
intent.putExtra("path", pdfString);
startActivity(intent);

修改

我已将清单B更改为以下内容：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.app" >
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@android:style/Theme.NoTitleBar.Fullscreen" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
                <action android:name="com.mysender.Data"/>
            </intent-filter>
        </activity>
    </application>
</manifest>

App A的MainActivity：

包com.mysender;

import android.content.Intent; import android.os.Bundle;

公共类MainActivity扩展了AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    String pdfString = "Hello World";


    final Intent intent= new Intent("com.example.app.MainActivity");
    intent.setPackage("com.example.app");
    intent.setAction("com.mysender.Data");
    intent.putExtra("path", pdfString);
    startActivity(intent);
}

}

但我仍然收到错误：

引起：android.content.ActivityNotFoundException：无活动发现处理Intent {act = com.mysender.Data pkg = com.example.app （有额外的）}

ActivityNotFoundException - 在两个应用之间发送意图

0 个答案: