带有Scale Gesture的Onclick听众

Question

我有一个textview，我在其上应用了一个缩放缩放手势，可以在缩放时增大/减小文本视图的大小。我也想在它上面应用onclick监听器，但是当我应用onclick不工作时。我在互联网上搜索但没有找到解决方案。任何帮助将不胜感激。

我的代码：

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package com.zeeshanfirstapp;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.util.TypedValue;
import android.view.MotionEvent;
import android.view.ScaleGestureDetector;
import android.view.View;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        final TextView textView = (TextView) findViewById(R.id.textView);

        textView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Log.v("ACtion", "Clicked");
            }
        });

        final ScaleGestureDetector scaleGestureDetector = new ScaleGestureDetector(this, new ScaleGestureDetector.OnScaleGestureListener() {

            @Override
            public boolean onScale(ScaleGestureDetector detector) {
                float size = textView.getTextSize();

                float factor = detector.getScaleFactor();

                float product = size*factor;
                textView.setTextSize(TypedValue.COMPLEX_UNIT_PX, product);
                textView.invalidate();

                return true;
            }

            @Override
            public boolean onScaleBegin(ScaleGestureDetector detector) {
                return true;
            }

            @Override
            public void onScaleEnd(ScaleGestureDetector detector) {

            }
        });

        View.OnTouchListener listener = new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                return scaleGestureDetector.onTouchEvent(event);
            }
        };

        textView.setOnTouchListener(listener);

    }

}

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Answer 1

您应该在onCreateView中执行视图调整，因为在调用onCreate（）时可能无法完全创建视图。