RelativeLayout layout= (RelativeLayout)findViewById(R.id.relativeLayout1);
layout.setOnTouchListener(this);
它告诉我将'this'转换为'OnTouchListener',结果如下:
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View.OnTouchListener;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
public class MainActivity extends Activity {
TextView display1;
TextView display2;
TextView display3;
TextView display4;
ImageView image1;
RelativeLayout layout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.start_screen);
getActionBar().setTitle("AutoSMS");
RelativeLayout layout= (RelativeLayout)findViewById(R.id.relativeLayout1);
layout.setOnTouchListener((OnTouchListener) this);
display1 = (TextView) findViewById(R.id.textView1);
display2 = (TextView) findViewById(R.id.textView2);
display3 = (TextView) findViewById(R.id.textView3);
display4 = (TextView) findViewById(R.id.textView4);
image1 = (ImageView) findViewById(R.id.imageView2);
Intent openStarting = new Intent("android.intent.action.MAIN");
startActivity(openStarting);
}
}
这是清单,以防万一
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.autosms"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="15"
android:targetSdkVersion="15" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".Start"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.START" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".End"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.END" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
</manifest>
DDMS给我ClassCastException,MainActivity无法强制转换为ViewOnTouchListener
任何帮助都会非常感激!
答案 0 :(得分:1)
您可以将整个活动实施为onTouchListener
,也可以在添加时创建新的onTouchListener
。喜欢
public class myActivity extends Activity实现onTouchListener
或
thisObject.add(new onTouchListener(){
// TODO:添加代码
});
如果没有,则无需将Activity转换为onTouchListener。如果您有double
并且想要将其值作为int
,则可以在某些情况下获得特定值。你只需要制作一个新的onTouchListener
或将你的活动变成一个,因为你没有。