为什么我的应用程序不在打开txt文件的应用程序列表中? [英] Why isn't my app on the list of apps to open txt file?

问题描述

我有一个文本阅读器应用程序，旨在当我单击文本文件打开它时从 Android 系统接收意图.但是我的应用程序不在系统弹出的列表中.以下是我的代码:

I have an text reader app that is designed to receive intent from Android system when I click on a text file to open it. But my app isn't on the list popped up by the system. Below are my codes:

清单

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.broadcastreceivertest1"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk android:minSdkVersion="8" />

<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:label="@string/app_name"
android:name=".BroadcastReceiverTest1Activity" >
<intent-filter >
<action android:name="android.intent.action.MAIN" />

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

<receiver android:name="MyBroadcastReceiver"> 
<intent-filter> 
<action android:name="android.intent.action.ACTION_VIEW" /> 
<action android:name="android.intent.action.ACTION_EDIT" /> 
<action android:name="android.intent.action.ACTION_PICK" /> 
<data android:scheme="file" /> 
<data android:mimeType="*/*" /> 
<data android:pathPattern=".*\.txt" />    
<data android:host="*" /> 
</intent-filter> 
</receiver> 

</application>

</manifest>

我的扩展广播接收器

public final class MyBroadcastReceiver extends BroadcastReceiver {
private String TAG = "MyBroadcastReceiver";

@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
Intent i = new Intent(context, BroadcastReceiverTest1Activity.class);
i.putExtra("URI", intent.getData());
context.startActivity(i);
Log.d(TAG, "Leaving onReceived...");
}
}

我的活动被广播接收者打开

My activity to be opened by the broadcast receiver

public class BroadcastReceiverTest1Activity extends Activity {

private String uri ="";
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final Intent intent = getIntent();

final String action = intent.getAction();

if(Intent.ACTION_VIEW.equals(action)){
uri = intent.getStringExtra("URI");
TextView textView = (TextView)findViewById(R.id.textView);
textView.setText(uri);

}

}
}

谢谢！

推荐答案

您需要将您的应用与文件扩展名相关联.为此，请在意图过滤器中添加这两行，然后就可以了

You need to associate your app with file extension. To do so, add these two line within intent filter and u'r good to go

<data android:scheme="file" />
<data android:mimeType="*/*"/>
<data android:pathPattern=".*\.pdf" />

你的清单看起来像这样

<activity name="com.your.activity">
    <intent-filter>
        <action android:name="android.intent.action.VIEW" />
        <category android:name="android.intent.category.DEFAULT" />
        <category android:name="android.intent.category.BROWSABLE" />
        <data android:scheme="file" />
        <data android:mimeType="*/*" />
        <data android:pathPattern=".*\.txt" />
    </intent-filter>
</activity>

<data android:scheme="file"/> => 这定义了文件必须是本地的，不能来自 http 或其他

<data android:scheme="file" /> => this define that the file must be local, not from http or else

<data android:mimeType="*/*"/> => 匹配任何 mime 类型

<data android:mimeType="*/*" /> => match any mime type

<data android:pathPattern=".*\.txt"/> => 这是您指定要匹配的扩展名的地方

<data android:pathPattern=".*\.txt" /> => this is where you specify what extension you want to match

希望对您有所帮助

这篇关于为什么我的应用程序不在打开txt文件的应用程序列表中?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！