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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。
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
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="14dp" android:orientation="vertical"> <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:padding="14dp" android:text="进一步的说明 -> leavesC" android:textAppearance="@style/TextAppearance.AppCompat" android:textSize="16sp"/> <View android:layout_width="match_parent" android:layout_height="0.6dp" android:background="#ddd"/> <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:padding="12dp" android:paddingStart="14dp" android:text="分享文本信息到..." android:textAppearance="@style/TextAppearance.AppCompat" android:textSize="14sp"/> <android.support.v7.widget.RecyclerView android:id="@+id/rv_appList" android:layout_width="match_parent" android:layout_height="match_parent"/> </LinearLayout>
RecyclerView 单个子项使用的布局 item_app.xml
<?xml version="1.0" encoding="utf-8"?> <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="wrap_content" android:paddingBottom="8dp" android:paddingLeft="16dp" android:paddingRight="16dp" android:paddingTop="8dp"> <ImageView android:id="@+id/iv_appIcon" android:layout_width="50dp" android:layout_height="50dp" android:scaleType="centerCrop" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent" tools:src="@mipmap/ic_launcher"/> <TextView android:id="@+id/tv_appName" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="3dp" android:ellipsize="end" android:maxLength="6" android:textSize="12sp" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toBottomOf="@id/iv_appIcon" tools:text="之乎者也"/> </android.support.constraint.ConstraintLayout>
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<AppShareAdapter.ViewHolder> {
public interface OnClickListener {
void onClick(int position);
}
public interface OnLongClickListener {
void onLongClick(int position);
}
private List<App> appList;
private LayoutInflater layoutInflater;
private OnClickListener clickListener;
private OnLongClickListener longClickListener;
AppShareAdapter(Context context, List<App> 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<App> 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<App> getShareAppList(Context context, Intent intent) {
List<App> appList = new ArrayList<>();
PackageManager packageManager = context.getPackageManager();
List<ResolveInfo> 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，可以关注亿速云行业资讯频道了解更多相关知识。
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