它在Android Studio上没有显示错误,但应用程序甚至没有在手机上启动。代码有任何问题。我觉得语法可能有任何错误,但我找不到。请帮助我。
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class MainActivity extends AppCompatActivity {
private Button bDriver,bCustomer;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button bDriver=(Button)findViewById(R.id.driver);
Button bCustomer=(Button)findViewById(R.id.customer);
bDriver.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent=new
Intent(MainActivity.this,DriverLoginActivity.class);
startActivity(intent);
finish();
}
});
bCustomer.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent ryt=new
Intent(MainActivity.this,CustomerLoginActivity.class);
startActivity(ryt);
finish();
}
});
}
}
并且activity_main.xml是这个,请解释是否存在与SDK版本相关的任何问题并上传详细信息。
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.trillcore.uber.MainActivity">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/driver"
android:layout_below="@+id/customer"
android:text="I am a Driver"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="I am a Customer"
android:layout_above="@+id/driver"
android:id="@+id/customer"/>
</RelativeLayout>