Opening a Dialog with text input from within a View in Android

Question

I have an app with a View based on the SurfaceHolder (similar to the Lunar Lander tutorial). The whole GUI is drawn on a canvas, and I want to be able to prompt for user tex

Answer 1

I am also looking to answer this question for myself. The answer already here is a good one. The android developer page as alter dialog samples.

I haven't read it completely yet, but if you search for the tag

DIALOG_TEXT_ENTRY

this would seem to be what you (and I) need.

I'm going to investigate that example first.

Answer 2

Create a dialog themed activity to display over your current activity.

public class TextEntryActivity extends Activity {
    private EditText et;

    /*
     * (non-Javadoc)
     * @see android.app.Activity#onCreate(android.os.Bundle)
     */
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_text_entry);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_BLUR_BEHIND,
                WindowManager.LayoutParams.FLAG_BLUR_BEHIND);
        // title
        try {
            String s = getIntent().getExtras().getString("title");
            if (s.length() > 0) {
                this.setTitle(s);
            }
        } catch (Exception e) {
        }
        // value

        try {
            et = ((EditText) findViewById(R.id.txtValue));
            et.setText(getIntent().getExtras().getString("value"));
        } catch (Exception e) {
        }
        // button
        ((Button) findViewById(R.id.btnDone)).setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                executeDone();
            }
        });
    }

    /* (non-Javadoc)
     * @see android.app.Activity#onBackPressed()
     */
    @Override
    public void onBackPressed() {
        executeDone();
        super.onBackPressed();
    }

    /**
     *
     */
    private void executeDone() {
        Intent resultIntent = new Intent();
        resultIntent.putExtra("value", TextEntryActivity.this.et.getText().toString());
        setResult(Activity.RESULT_OK, resultIntent);
        finish();
    }


}

Launch by:

Intent foo = new Intent(this, TextEntryActivity.class);
foo.putExtra("value", "old value to edit");
this.startActivityForResult(foo, EDIT_ACTION);

then catch the response on onActivityResult

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        switch (requestCode) {
            case EDIT_ACTION:
                try {
                    String value = data.getStringExtra("value");
                    if (value != null && value.length() > 0) {
                        //do something with value
                    }
                } catch (Exception e) {
                }
                break;
            default:
                break;
        }
    }

Manifest is defined as:

<activity
            android:name=".utils.TextEntryActivity"
            android:label="Type in the value"
            android:theme="@android:style/Theme.Dialog" />