Android copy/paste from clipboard manager

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情书的邮戳
情书的邮戳 2020-11-28 10:04

Is it possible to send past command so that it pastes text into currently focused edit text. Scenario:

  1. Background service listening for notification (done)
7条回答
  •  猫巷女王i
    2020-11-28 10:47

    I do it this way. Clipboard manager for all api levels.

    import java.io.FileInputStream;
    import java.io.FileNotFoundException;
    import java.io.IOException;
    import java.io.InputStreamReader;
    
    import android.annotation.SuppressLint;
    import android.content.ClipData;
    import android.content.ClipboardManager;
    import android.content.ContentResolver;
    import android.content.Context;
    import android.content.Intent;
    import android.content.res.AssetFileDescriptor;
    import android.net.Uri;
    import android.util.Log;
    
    
    public class MyClipboardManager {
    
        @SuppressLint("NewApi")
        @SuppressWarnings("deprecation")
        public boolean copyToClipboard(Context context, String text) {
            try {
                int sdk = android.os.Build.VERSION.SDK_INT;
                if (sdk < android.os.Build.VERSION_CODES.HONEYCOMB) {
                    android.text.ClipboardManager clipboard = (android.text.ClipboardManager) context
                            .getSystemService(context.CLIPBOARD_SERVICE);
                    clipboard.setText(text);
                } else {
                    android.content.ClipboardManager clipboard = (android.content.ClipboardManager) context
                            .getSystemService(context.CLIPBOARD_SERVICE);
                    android.content.ClipData clip = android.content.ClipData
                            .newPlainText(
                                    context.getResources().getString(
                                            R.string.message), text);
                    clipboard.setPrimaryClip(clip);
                }
                return true;
            } catch (Exception e) {
                return false;
            }
        }
    
        @SuppressLint("NewApi")
        public String readFromClipboard(Context context) {
            int sdk = android.os.Build.VERSION.SDK_INT;
            if (sdk < android.os.Build.VERSION_CODES.HONEYCOMB) {
                android.text.ClipboardManager clipboard = (android.text.ClipboardManager) context
                        .getSystemService(context.CLIPBOARD_SERVICE);
                return clipboard.getText().toString();
            } else {
                ClipboardManager clipboard = (ClipboardManager) context
                        .getSystemService(Context.CLIPBOARD_SERVICE);
    
                // Gets a content resolver instance
                ContentResolver cr = context.getContentResolver();
    
                // Gets the clipboard data from the clipboard
                ClipData clip = clipboard.getPrimaryClip();
                if (clip != null) {
    
                    String text = null;
                    String title = null;
    
                    // Gets the first item from the clipboard data
                    ClipData.Item item = clip.getItemAt(0);
    
                    // Tries to get the item's contents as a URI pointing to a note
                    Uri uri = item.getUri();
    
                    // If the contents of the clipboard wasn't a reference to a
                    // note, then
                    // this converts whatever it is to text.
                    if (text == null) {
                        text = coerceToText(context, item).toString();
                    }
    
                    return text;
                }
            }
            return "";
        }
    
        @SuppressLint("NewApi")
        public CharSequence coerceToText(Context context, ClipData.Item item) {
            // If this Item has an explicit textual value, simply return that.
            CharSequence text = item.getText();
            if (text != null) {
                return text;
            }
    
            // If this Item has a URI value, try using that.
            Uri uri = item.getUri();
            if (uri != null) {
    
                // First see if the URI can be opened as a plain text stream
                // (of any sub-type). If so, this is the best textual
                // representation for it.
                FileInputStream stream = null;
                try {
                    // Ask for a stream of the desired type.
                    AssetFileDescriptor descr = context.getContentResolver()
                            .openTypedAssetFileDescriptor(uri, "text/*", null);
                    stream = descr.createInputStream();
                    InputStreamReader reader = new InputStreamReader(stream,
                            "UTF-8");
    
                    // Got it... copy the stream into a local string and return it.
                    StringBuilder builder = new StringBuilder(128);
                    char[] buffer = new char[8192];
                    int len;
                    while ((len = reader.read(buffer)) > 0) {
                        builder.append(buffer, 0, len);
                    }
                    return builder.toString();
    
                } catch (FileNotFoundException e) {
                    // Unable to open content URI as text... not really an
                    // error, just something to ignore.
    
                } catch (IOException e) {
                    // Something bad has happened.
                    Log.w("ClippedData", "Failure loading text", e);
                    return e.toString();
    
                } finally {
                    if (stream != null) {
                        try {
                            stream.close();
                        } catch (IOException e) {
                        }
                    }
                }
    
                // If we couldn't open the URI as a stream, then the URI itself
                // probably serves fairly well as a textual representation.
                return uri.toString();
            }
    
            // Finally, if all we have is an Intent, then we can just turn that
            // into text. Not the most user-friendly thing, but it's something.
            Intent intent = item.getIntent();
            if (intent != null) {
                return intent.toUri(Intent.URI_INTENT_SCHEME);
            }
    
            // Shouldn't get here, but just in case...
            return "";
        }
    
    }
    

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