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Android 分享功能的实现代码

2017-03-25 09:13 756 查看

Android 分享功能的实现代码

一个Activity中，取出设备上安装的所有支持分享动作的Activity，在grid中显示。

实例代码：

/**
* 分享activity
*/
public class NShareActivity extends AppCompatActivity {
public final static String EXTRA_STR_TO_SHARE="str_to_share1";
private class SharedPkgInfo{
String pkgName;
Drawable icon;
String appName;
String activityClassName;
}
class Vh extends RecyclerView.ViewHolder {
TextView tv;
ImageView iv;
public Vh(View itemView) {
super(itemView);
itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//点击了某个app的图标，用选择的app分享内容
Intent share = new Intent(android.content.Intent.ACTION_SEND);
share.setType("text/*");
share.putExtra(Intent.EXTRA_SUBJECT, "分享");
share.putExtra(Intent.EXTRA_TEXT,NShareActivity.this.strToShare);
//share.putExtra(Intent.EXTRA_STREAM, uri); // Optional, just if you wanna share an image.
SharedPkgInfo pi = sharePkgInfo.get(getAdapterPosition());
share.setClassName(pi.pkgName,pi.activityClassName);
//share.setPackage();
startActivity(share);
}
});
}
}
//获取支持供享的包的信息
List<SharedPkgInfo> sharePkgInfo=new ArrayList<>();
//要分享出去的文本放在这里
private String strToShare=null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Intent intent= this.getIntent();
strToShare = intent.getStringExtra(EXTRA_STR_TO_SHARE);
getAllSharePackages();
//将可共享的app图标都放在一个gridview中
RecyclerView v=new RecyclerView(this);
v.setPadding(16,16,16,16);
GridLayoutManager lm=new GridLayoutManager(this,4);
v.setLayoutManager(lm);
v.setAdapter(new RecyclerView.Adapter<Vh>()
{
@Override
public Vh onCreateViewHolder(ViewGroup parent, int viewType) {
//必须创建新的view holder
LinearLayout v=new LinearLayout(NShareActivity.this);
v.setPadding(8,8,8,8);
Vh vh=new Vh(v);
//先创建item view:上面一个图标，下面一个文本
LinearLayout.LayoutParams lp=new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
v.setOrientation(LinearLayout.VERTICAL);
v.setLayoutParams(lp);
ImageView imgv=new ImageView(NShareActivity.this);
imgv.setLayoutParams(new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
120));
TextView tv=new TextView(NShareActivity.this);
tv.setGravity(Gravity.CENTER);
v.addView(imgv);
v.addView(tv);
vh.tv=tv;
vh.iv=imgv;
return vh;
}
@Override
public void onBindViewHolder(Vh holder, int position) {
//将视图与数据绑定
SharedPkgInfo spi=sharePkgInfo.get(position);
holder.tv.setText(spi.appName);
holder.iv.setImageDrawable(spi.icon);
}
@Override
public int getItemCount() {
return sharePkgInfo.size();
}
});
v.setBackgroundColor(Color.WHITE);
this.setContentView(v);
}
//获取所有支持send Action的包名和图片
void getAllSharePackages()
{
Intent share = new Intent(android.content.Intent.ACTION_SEND);
//分析网站地址的话用这个：
//intent.setType("text/plain"); //纯文本
share.setType("text/*");
// gets the list of intents that can be loaded.
List<ResolveInfo> resInfo = getPackageManager().queryIntentActivities(share, 0);
if (!resInfo.isEmpty()) {
for (ResolveInfo info : resInfo) {
SharedPkgInfo spi = new SharedPkgInfo();
spi.pkgName = info.activityInfo.packageName;
spi.icon = info.loadIcon(getPackageManager());
spi.appName = info.loadLabel(getPackageManager()).toString();
spi.activityClassName=info.activityInfo.name;
sharePkgInfo.add(spi);
//Log.w("shared",spi.pkgName+" , "+spi.appName+","+info.activityInfo.name);
}
}
}
}

感谢阅读，希望能帮助到大家，谢谢大家对本站的支持！

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标签： Android 分享功能

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