android系统自带的分享功能

package com.deepblue.testsharedemo;

import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;

import java.io.File;
import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

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

private void initWidget() {
findViewById(R.id.btn1).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
shareText(v);
}
});
findViewById(R.id.btn2).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
shareSingleImage(v);
}
});
}

//分享文字
public void shareText(View view) {
Intent shareIntent = new Intent();
shareIntent.setAction(Intent.ACTION_SEND);
shareIntent.putExtra(Intent.EXTRA_TEXT, "This is my Share text.");
shareIntent.setType("text/plain");

//设置分享列表的标题，并且每次都显示分享列表
startActivity(Intent.createChooser(shareIntent, "分享到"));
}

//分享单张图片
public void shareSingleImage(View view) {
String imagePath = Environment.getExternalStorageDirectory() + File.separator + "test.jpg";
//由文件得到uri
Uri imageUri = Uri.fromFile(new File(imagePath));
Log.d("share", "uri:" + imageUri);  //输出：file:///storage/emulated/0/test.jpg

Intent shareIntent = new Intent();
shareIntent.setAction(Intent.ACTION_SEND);
shareIntent.putExtra(Intent.EXTRA_STREAM, imageUri);
shareIntent.setType("image/*");
startActivity(Intent.createChooser(shareIntent, "分享到"));
}

//分享多张图片
public void shareMultipleImage(View view) {
ArrayList<Uri> uriList = new ArrayList<>();

String path = Environment.getExternalStorageDirectory() + File.separator;
uriList.add(Uri.fromFile(new File(path + "australia_1.jpg")));
uriList.add(Uri.fromFile(new File(path + "australia_2.jpg")));
uriList.add(Uri.fromFile(new File(path + "australia_3.jpg")));

Intent shareIntent = new Intent();
shareIntent.setAction(Intent.ACTION_SEND_MULTIPLE);
shareIntent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, uriList);
shareIntent.setType("image/*");
startActivity(Intent.createChooser(shareIntent, "分享到"));
}
}