这是我的主布局文件:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FBFBD8">
<android.support.design.widget.NavigationView
android:layout_width="wrap_content"
android:layout_height="match_parent"
app:menu="@menu/navigation_menu"
android:layout_gravity="start"
app:headerLayout="@layout/nav_header"
android:id="@+id/nv">
</android.support.design.widget.NavigationView>
</android.support.v4.widget.DrawerLayout>
第二个布局文件:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:background="#816291">
<ImageView
android:id="@+id/imageView"
android:layout_width="180dp"
android:layout_height="130dp"
android:layout_marginBottom="15dp"
android:layout_marginTop="15dp"
android:background="@drawable/man" />
</LinearLayout>
第三版面配置文件:
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:layout_width="wrap_content">
<item android:id="@+id/account"
android:icon="@drawable/icon1"
android:title="My Account"/>
<item android:id="@+id/settings"
android:icon="@drawable/icon2"
android:title="Settings"/>
<item android:id="@+id/mycart"
android:icon="@drawable/icon3"
android:title="My Cart"/>
</menu>
这是我的MainActivity.java:
package com.example.exercise1;
import androidx.annotation.NonNull;
import androidx.appcompat.app.ActionBarDrawerToggle;
import androidx.appcompat.app.AppCompatActivity;
import androidx.drawerlayout.widget.DrawerLayout;
import android.os.Bundle;
import android.view.MenuItem;
import android.widget.Toast;
import
import com.google.android.material.navigation.NavigationView;
public class MainActivity extends AppCompatActivity {
private DrawerLayout dl ;
private ActionBarDrawerToggle abdt;
private NavigationView nv;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
dl = findViewById(R.id.activity_main);
abdt = new ActionBarDrawerToggle(this, dl, 0, 0);
dl.addDrawerListener(abdt);
abdt.syncState();getSupportActionBar().setDisplayHomeAsUpEnabled(true);
nv = findViewById(R.id.nv);
nv.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {
int id = menuItem.getItemId();
switch(id) {
case R.id.account:
Toast.makeText(MainActivity.this, "My Account", Toast.LENGTH_SHORT).show();
return true;
case R.id.settings:
Toast.makeText(MainActivity.this, "Settings", Toast.LENGTH_SHORT).show();
return true;
case R.id.mycart:
Toast.makeText(MainActivity.this, "My Cart", Toast.LENGTH_SHORT).show();
return true;
default:
return true;
}
}
});
}
public boolean onOptionsItemSelected(MenuItem item) {
if(abdt.onOptionsItemSelected(item))
return true;
return super.onOptionsItemSelected(item);
}
}
然后build.gradle:
apply plugin: 'com.android.application'
android {
compileSdkVersion 29
buildToolsVersion "29.0.0"
defaultConfig {
applicationId "com.example.exercise1"
minSdkVersion 15
targetSdkVersion 29
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation 'com.android.support:design:28.0.0'
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'androidx.appcompat:appcompat:1.0.2'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test:runner:1.2.0'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
}
在编译期间,我收到消息:错误:链接文件资源失败。 附加信息:错误:找不到资源菜单/ navigation_menu(aka com.example.exercise1:menu / navigation_menu)。 我该怎么办才能解决此错误?
答案 0 :(得分:0)
确保将此“第三版式文件”称为src/main/res/menu/navigation_menu.xml
另外,属性layout_height
和layout_width
对于菜单资源是无用的(这可能是崩溃的原因)...并且com.android.support:design:28.0.0
应该迁移到{{1} }。