为什么我的ACTION_SEND可以完美地处理API 25+,但是会在以前的API上出现混乱?
所以我有一个共享按钮,将共享图像和文本的主体。为什么我的ACTION_SEND可以完美地处理API 25+,但是会在以前的API上出现混乱?
在牛轧糖(API 25)和奥利奥(API 26)上,它的工作原理绝对完美。但是,当涉及到一些老版本时,它并不像预期的那样工作。
棉花糖(API 23):插入图像很好,但没有正文。 棒棒糖(API 22):当您弹出共享按钮并弹出错误时崩溃“不幸的是,消息已停止。”发生这种情况时,LOGCAT不会向我显示任何错误。
这里是我的分享按钮代码:
if (id == R.id.action_shareWine) {
Intent intentShare = new Intent(Intent.ACTION_SEND);
intentShare.putExtra(intentShare.EXTRA_STREAM, imageURI);
intentShare.setType("image/*");
intentShare.putExtra(Intent.EXTRA_TEXT, "body of text goes here");
if (intentShare.resolveActivity(getPackageManager()) != null) {
startActivity(intentShare);
}
return true;
}
这里是一幅画给一个视觉的想法怎么回事:
任何人有任何想法可能是怎么回事这里?
更新1
这里是崩溃日志的棒棒糖模拟器:
FATAL EXCEPTION: Mms-1
Process: com.android.mms, PID: 7570
java.lang.IllegalStateException: Couldn't read row 0, col 0 from CursorWindow. Make sure the Cursor is initialized correctly before accessing data from it.
这我不知道为什么它正在发生,因为光标加载图像只在同一个活动中的ImageView中罚款。
致电addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
对ACTION_SEND
Intent
,允许第三方读取由Uri
标识的内容。
此外,由于图像看上去是JPEG(基于文件扩展名),因此MIME类型为image/jpeg
,而不是image/*
或image/png
。
糟糕。不知道为什么我认为它是PNG。这已被更改为JPEG。但即使有这个许可标志,我在棒棒糖和棉花糖上也遇到同样的问题。 – andrdoiddev
@andrdoiddev:那么,就无文本部分而言,请理解,对于任何'ACTION_SEND'实现都不需要在同一个'Intent'上支持'EXTRA_TEXT'和'EXTRA_STREAM'。有些人会,有些人不会,因为这超出了ACTION_SEND文档所要求的范围。就棒棒糖而言,请确保您正在检查整个设备的LogCat,而不仅仅是您的应用程序,因为崩溃不是来自您的应用程序。 – CommonsWare
我刚刚发现了棒棒糖错误的崩溃日志。我将它添加到原始帖子的底部。它表示它无法从光标读取,即使光标正确地将来自URI的图像放入ImageView中并放入同一活动中。 – andrdoiddev
更多细节
在奥利奥和棉花糖版本可以正常使用这个
https://developer.android.com/reference/android/support/v4/content/FileProvider.html
源代码
https://drive.google.com/open?id=1vfO43dMSt096CMp6nrOJNl3fJAf6MPwG
create xml folder inside providers_path.xml
<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<external-path name="external_files" path="."/>
</paths>
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.holostik.sharescreenshotexample">
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.FLASHLIGHT" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-feature android:name="android.hardware.camera" />
<uses-permission android:name="android.permission.CAMERA"></uses-permission>
<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">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="com.holostik.sharescreenshotexample.fileprovider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/provider_paths" />
</provider>
</application>
</manifest>
package com.holostik.sharescreenshotexample;
import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v4.content.FileProvider;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.Toast;
import com.holostik.sharescreenshotexample.share.ScreenshotType;
import com.holostik.sharescreenshotexample.share.ScreenshotUtils;
import java.io.File;
import java.io.FileOutputStream;
import java.util.Random;
public class MainActivity extends AppCompatActivity {
int n;
String photoPath;
LinearLayout rootContent;
ImageView iv_share;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
rootContent = (LinearLayout) findViewById(R.id.rootContent);
iv_share = (ImageView) findViewById(R.id.iv_share);
iv_share.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
int permissionCheck = ContextCompat.checkSelfPermission(MainActivity.this,
Manifest.permission.CAMERA);
if (permissionCheck == PackageManager.PERMISSION_GRANTED) {
Log.e("MainActivity ", "P granted");
takeScreenshot(ScreenshotType.FULL);
} else {
ActivityCompat.requestPermissions(MainActivity.this,
new String[]{Manifest.permission.CAMERA,
Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.WRITE_EXTERNAL_STORAGE
}, 1);
}
} else {
Log.e("MainActivity", "Lower Than MarshMallow");
takeScreenshot(ScreenshotType.FULL);
}
}
});
}
/* Method which will take screenshot on Basis of Screenshot Type ENUM */
private void takeScreenshot(ScreenshotType screenshotType) {
Bitmap b = null;
switch (screenshotType) {
case FULL:
b = ScreenshotUtils.getScreenShot(rootContent);
break;
case CUSTOM:
//If Screenshot type is CUSTOM
break;
}
//If bitmap is not null
if (b != null) {
// showScreenShotImage(b);//show bitmap over imageview
Log.e("keshav", "bitmap is -- > " + b);
SaveImage(b);
shareScreenshot();
/* File saveFile = ScreenshotUtils.getMainDirectoryName(MainActivity.this);//get the path to save screenshot
File file = ScreenshotUtils.store(b, "screenshot" + screenshotType + ".jpg", saveFile);//save the screenshot to selected path
shareScreenshot(file);//finally share screenshot
Log.e("file Path", String.valueOf(file));
*/
} else
//If bitmap is null show toast message
Toast.makeText(MainActivity.this, R.string.screenshot_take_failed, Toast.LENGTH_SHORT).show();
}
private void SaveImage(Bitmap finalBitmap)
{
String root = Environment.getExternalStorageDirectory().toString();
File myDir = new File(root + "/saved_images");
myDir.mkdirs();
Random generator = new Random();
n = 10000;
n = generator.nextInt(n);
String fname = "Image-" + n + ".jpg";
File file = new File(myDir, fname);
if (file.exists()) file.delete();
try {
FileOutputStream out = new FileOutputStream(file);
finalBitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
/* TODO Show screenshot Bitmap */
// private void showScreenShotImage(Bitmap b) {
// imageView.setImageBitmap(b);
// }
private void shareScreenshot()
{
photoPath = Environment.getExternalStorageDirectory() + "/saved_images" + "/Image-" + n + ".jpg";
File F = new File(photoPath);
//Uri U = Uri.fromFile(F);
// Uri U = FileProvider.getUriForFile(getActivity(), getActivity().getApplicationContext().getPackageName() + ".my.package.name.provider", F);
// TODO your package name as well add .fileprovider
Uri U = FileProvider.getUriForFile(MainActivity.this.getApplicationContext(), "com.holostik.sharescreenshotexample.fileprovider", F);
Intent i = new Intent(Intent.ACTION_SEND);
i.setType("image/png");
i.putExtra(Intent.EXTRA_STREAM, U);
startActivityForResult(Intent.createChooser(i, "Email:"), 1);
}
// TODO Share Screen SHOT End ..............
}
'imageURI'的价值是什么?此外,由于它是你的图像,你知道什么是MIME类型,为什么你使用通配符? – CommonsWare
'imageURI = Uri.parse(cursor.getString(cursor.getColumnIndexOrThrow(WineContract.WineEntry.COLUMN_WINE_IMAGE)));'我知道游标具有正确的URI,因为相同的代码可以在活动中设置imageview。 – andrdoiddev
像之前的评论所说,我很确定所有制造商和设备都不支持“image/*”。您需要指定确切的地雷类型“image/jpeg”或“image/png” – AlonsoFloo