三步走:
一、先在AndroidManifest.xml声明provider:
html
<provider
android:name="androidx.core.content.FileProvider"
android:authorities="${applicationId}.FileProvider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/provider_paths"/>
</provider>
二、创建@xml/provider_paths
html
<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<external-path name="external_files" path="."/>
</paths>
三、打开文件:
java
Intent intent = new Intent(Intent.ACTION_VIEW);
File file = new File("/sdcard/Music/音乐文件.mp3");
// "com.example.myapplication.FileProvider"对应AndroidManifest.xml声明的android:authorities="${applicationId}.FileProvider"
Uri uri = FileProvider.getUriForFile(getApplicationContext(), "com.example.myapplication.FileProvider", file);
// 其他类型根据你实际的文件来
intent.setDataAndType(uri, "audio/mp3");
intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
try {
startActivity(intent);
} catch (Exception e) {
Toast.makeText(this, "没有找到播放音频的应用", Toast.LENGTH_SHORT).show();
e.printStackTrace();
}