Question

如果已经包含support-v4，是否需要在gradle中加入appcompat-v7和support-design？我知道，当包括support-design support-v4和appcompat-v7已经是我的外部库的一部分时，即使它们不在gradle中也是如此。我知道support-design取决于appcompat-v7而appcompat-v7取决于support-v4我只是想知道从gradle中移除support-v4和appcompat-v7是否会导致任何问题。

我还要排除support-v4（以减少apk尺寸），我是通过将其从support-design中排除并仅添加support-v4所需的模块来完成的，我是在正确的方向？见下文：

的gradle：

apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    buildToolsVersion "26.0.1"
    defaultConfig {
        applicationId "com.example.test.applicationtest_v4lib"
        minSdkVersion 19
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    //compile 'com.android.support:appcompat-v7:26.0.1'
    compile 'com.android.support.constraint:constraint-layout:1.0.2'
    compile('com.android.support:design:26.0.1'){
        exclude group: 'com.android.support', module: 'support-v4'
    }
    compile 'com.android.support:support-fragment:26.0.1'
    //compile 'com.android.support:support-compat:26.0.1'
    //compile 'com.android.support:support-v4:26.0.1'
    testCompile 'junit:junit:4.12'
}

我的活动：

import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
//import android.support.v4.app.ActivityCompat;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                        .setAction("Action", null).show();
            }
        });

        //ActivityCompat
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

Answer 1

Android支持库套件中的大多数库都依赖于一个或多个库。例如，几乎所有支持库都依赖于support-compat包。通常，您不必担心支持库依赖项，因为gradle构建工具通过自动包含依赖库来管理库依赖项。

如果要查看应用程序中包含的库和库依赖项，请在应用程序开发项目的构建根目录中运行以下命令，以获取该项目的依赖项报告，包括Android支持库和其他库：

gradle -q依赖项your-app-project：dependencies

See details in Android documentation

如果已经有支持设计，是否需要在gradle中包含support-v4？

1 个答案: