无法解析方法 onActivityResult

Question

我正在尝试创建一个应用程序，允许将图片和视频从画廊分享到 facebook。我的代码在这行代码中弹出错误（以红色突出显示）：“onActivityResult”、“getContentResolver”、“PlusShare”、“setType”、“addStream”、“setText”和“getIntent”说无法解析方法。完整编码如下：

MainActivity.java

package com.example.dothis.facebook;


import android.app.Activity;
import android.content.ContentResolver;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends Activity {

private static final int REQ_SELECT_PHOTO = 1;
private static final int REQ_START_SHARE = 2;

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

    // listeners of our two buttons
    View.OnClickListener handler = new View.OnClickListener() {
        public void onClick(View v) {


            Button shareMediaButton = (Button)    findViewById(R.id.share_media);
            shareMediaButton.setOnClickListener(new   android.view.View.OnClickListener() {
                public void onClick(View v) {
                    Intent photoPicker = new     Intent(Intent.ACTION_PICK);
                    photoPicker.setType("video/*, image/*");
                    startActivityForResult(photoPicker, REQ_SELECT_PHOTO);
                }
            });

        }

        @Override
        protected void onActivityResult(int requestCode, int   resultCode, Intent intent) {
            super.onActivityResult(requestCode, resultCode, intent);

            if (requestCode == REQ_SELECT_PHOTO) {
                if (resultCode == Activity.RESULT_OK) {
                    Uri selectedImage = intent.getData();
                    ContentResolver cr = this.getContentResolver();
                    String mime = cr.getType(selectedImage);

                    PlusShare.Builder share = new  PlusShare.Builder(this);
                    share.setText("hello everyone!");
                    share.addStream(selectedImage);
                    share.setType(mime);
                    startActivityForResult(share.getIntent(),   REQ_START_SHARE);

                }
            }
        }

    }
   }

Android 清单文件：

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

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

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >

    <meta-data
        android:name="com.facebook.sdk.ApplicationId"
        android:value="@string/facebook_app_id" />


    <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"  />
        </intent-filter>
    </activity>
</application>

</manifest>

有人可以指导我如何解决这个问题吗？任何形式的建议都非常感谢。谢谢。

Answer 1

你引用 {} 的地方不对，你的 onCreate 方法 匿名类 View.OnClickListener 没有正确关闭 }。

下面是固定版本，引用正确。

package com.example.dothis.facebook;


import android.app.Activity;
import android.content.ContentResolver;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends Activity {

  private static final int REQ_SELECT_PHOTO = 1;
  private static final int REQ_START_SHARE = 2;

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

    // listeners of our two buttons
    View.OnClickListener handler = new View.OnClickListener() {
      public void onClick(View v) {

        Button shareMediaButton = (Button) findViewById(R.id.share_media);
        shareMediaButton.setOnClickListener(new android.view.View.OnClickListener() {
          public void onClick(View v) {
            Intent photoPicker = new Intent(Intent.ACTION_PICK);
            photoPicker.setType("video/*, image/*");
            startActivityForResult(photoPicker, REQ_SELECT_PHOTO);
          }
        });

      }
    };
  }


  @Override
  protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
    super.onActivityResult(requestCode, resultCode, intent);

    if (requestCode == REQ_SELECT_PHOTO) {
      if (resultCode == Activity.RESULT_OK) {
        Uri selectedImage = intent.getData();
        ContentResolver cr = this.getContentResolver();
        String mime = cr.getType(selectedImage);

        PlusShare.Builder share = new PlusShare.Builder(this);
        share.setText("hello everyone!");
        share.addStream(selectedImage);
        share.setType(mime);
        startActivityForResult(share.getIntent(), REQ_START_SHARE);

      }
    }
  }

}

Answer 2

试试这个代码，希望对你有帮助。

    Intent share = new Intent(Intent.ACTION_SEND);
    share.setType("image/jpeg");
    share.putExtra(Intent.EXTRA_STREAM, Uri.parse("file:///sdcard/path/to/image.ext"));

    startActivity(Intent.createChooser(share, "Share Image"));

Answer 3

首先你需要像这样修改你的Manifest.xml文件

<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.FLASHLIGHT" />
<uses-feature
        android:name="android.hardware.camera"
        android:required="false" />

然后修改你的方法，如：

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == REQ_CODE) {
        if (resultCode == RESULT_OK) {
            taken = true;
            getContentResolver().notifyChange(uri, null);
            ContentResolver cr = getContentResolver();
            try {
                bmp = MediaStore.Images.Media.getBitmap(cr, uri);
                imagePhoto.setImageBitmap(bmp);
                Toast.makeText(UserProfile.this, "Image has been saved to " + file.getAbsolutePath() + " as " + file.getName(), Toast.LENGTH_LONG).show();

            } catch (Exception e) {
                throw new RuntimeException(e.getMessage());
            }
        } else if (resultCode == RESULT_CANCELED) {
            taken = false;
            Toast.makeText(UserProfile.this, "Action canceled", Toast.LENGTH_SHORT).show();
        }
    }
}

在你调用意图的地方输入这个：

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
file = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "picture.jpg");
uri = Uri.fromFile(file);
intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
startActivityForResult(intent, REQ_CODE);

我使用这些值使其工作

private static final int REQ_CODE = 1152;
public static final int MEDIA_TYPE_IMAGE = 1;
public static final int MEDIA_TYPE_VIDEO = 2;

希望对你有帮助！！！