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Android中怎么实现一个分享控件，针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。
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首先，声明 BottomSheetDialog 对话框的主布局 dialog_bottom_sheet.xml
当中，RecyclerView 用于展示提供分享功能的应用列表
RecyclerView 单个子项使用的布局 item_app.xml
RecyclerView 配套使用的 Adapter ： AppShareAdapter
/** * 作者：叶应是叶 * 时间：2018/3/28 20:30 * 描述：https://github.com/leavesC */ public class AppShareAdapter extends RecyclerView.Adapter{ public interface OnClickListener { void onClick(int position); } public interface OnLongClickListener { void onLongClick(int position); } private List appList; private LayoutInflater layoutInflater; private OnClickListener clickListener; private OnLongClickListener longClickListener; AppShareAdapter(Context context, List appList) { this.layoutInflater = LayoutInflater.from(context); this.appList = appList; } @Override public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { View view = layoutInflater.inflate(R.layout.item_app, parent, false); return new AppShareAdapter.ViewHolder(view); } @Override public void onBindViewHolder(final ViewHolder holder, int position) { holder.iv_appIcon.setBackground(appList.get(position).getAppIcon()); holder.tv_appName.setText(appList.get(position).getAppName()); holder.itemView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (clickListener != null) { clickListener.onClick(holder.getAdapterPosition()); } } }); holder.itemView.setOnLongClickListener(new View.OnLongClickListener() { @Override public boolean onLongClick(View v) { if (longClickListener != null) { longClickListener.onLongClick(holder.getAdapterPosition()); } return true; } }); } @Override public int getItemCount() { return appList.size(); } void setClickListener(OnClickListener clickListener) { this.clickListener = clickListener; } void setLongClickListener(OnLongClickListener longClickListener) { this.longClickListener = longClickListener; } class ViewHolder extends RecyclerView.ViewHolder { private ImageView iv_appIcon; private TextView tv_appName; ViewHolder(View itemView) { super(itemView); iv_appIcon = itemView.findViewById(R.id.iv_appIcon); tv_appName = itemView.findViewById(R.id.tv_appName); } } }
利用 Intent 找出所有提供分享功能的应用，初始化 BottomSheetDialog 即可
/**
* 作者：叶应是叶
* 时间：2018/3/28 20:30
* 描述：https://github.com/leavesC
*/
public class MainActivity extends AppCompatActivity {
private List appList;
private BottomSheetDialog bottomSheetDialog;
private Intent shareIntent;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.setType("text/plain");
shareIntent.putExtra(Intent.EXTRA_TEXT, "https://github.com/leavesC");
}
public void originalShare(View view) {
Intent intent = Intent.createChooser(shareIntent, "分享一段文本信息");
if (shareIntent.resolveActivity(getPackageManager()) != null) {
startActivity(intent);
}
}
public void customizedShare(View view) {
if (bottomSheetDialog == null) {
bottomSheetDialog = new BottomSheetDialog(this);
bottomSheetDialog.setContentView(R.layout.dialog_bottom_sheet);
initBottomDialog();
}
bottomSheetDialog.show();
}
private void initBottomDialog() {
appList = getShareAppList(this, shareIntent);
AppShareAdapter appShareAdapter = new AppShareAdapter(this, appList);
appShareAdapter.setClickListener(new AppShareAdapter.OnClickListener() {
@Override
public void onClick(int position) {
Intent intent = new Intent(Intent.ACTION_SEND);
intent.setComponent(new ComponentName(appList.get(position).getPackageName(), appList.get(position).getMainClassName()));
intent.setType("text/plain");
intent.putExtra(Intent.EXTRA_TEXT, "https://github.com/leavesC");
startActivity(intent);
}
});
appShareAdapter.setLongClickListener(new AppShareAdapter.OnLongClickListener() {
@Override
public void onLongClick(int position) {
Intent intent = new Intent();
intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
intent.setData(Uri.parse("package:" + appList.get(position).getPackageName()));
startActivity(intent);
}
});
RecyclerView rv_appList = bottomSheetDialog.findViewById(R.id.rv_appList);
if (rv_appList != null) {
rv_appList.setLayoutManager(new GridLayoutManager(this, 4));
rv_appList.setAdapter(appShareAdapter);
}
}
public static List getShareAppList(Context context, Intent intent) {
List appList = new ArrayList<>();
PackageManager packageManager = context.getPackageManager();
List resolveInfoList = packageManager.queryIntentActivities(intent, PackageManager.COMPONENT_ENABLED_STATE_DEFAULT);
if (resolveInfoList == null || resolveInfoList.size() == 0) {
return null;
} else {
for (ResolveInfo resolveInfo : resolveInfoList) {
App appInfo = new App(resolveInfo.loadLabel(packageManager).toString(), resolveInfo.activityInfo.packageName,
resolveInfo.activityInfo.name, resolveInfo.loadIcon(packageManager));
appList.add(appInfo);
}
}
return appList;
}
} 关于Android中怎么实现一个分享控件问题的解答就分享到这里了，希望以上内容可以对大家有一定的帮助，如果你还有很多疑惑没有解开，可以关注创新互联行业资讯频道了解更多相关知识。
