应用程序在Android 5.1和6.1中运行良好，但在4.10（API 16）中崩溃

问题描述

我是Android开发中的新手。我可以使该应用程序在Android 5.1中运行，但是当我尝试在Android 4.1中部署该应用程序时，它通常会在主要活动本身中崩溃。我理解它是因为我使用了矢量图像，而android 4.1与它不兼容。为了克服这个问题，我将代码设置如下：

I am a newbee in the Android development. I am able to make this app work in Android 5.1 and but however when I tried to deploy this app in Android 4.1 it used to crash in the main activity itself. I understood its becuase I used vector images and android 4.1 is not compatible with it. To overcome this I set the code as mentioned below:

 // Gradle Plugin 2.0+
 android {
   defaultConfig {
     vectorDrawables.useSupportLibrary = true
    }
 }
You’ll note this new attribute only exists in the version 2.0 of the Gradle Plugin. If you are using Gradle 1.5 you’ll instead use
 // Gradle Plugin 1.5
 android {
   defaultConfig {
     generatedDensities = []
  }

  // This is handled for you by the 2.0+ Gradle Plugin
  aaptOptions {
    additionalParameters "--no-version-vectors"
  }
 }

我现在收到此错误

代码文件

import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.provider.Settings;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.view.View;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;

import com.google.android.gms.appindexing.Action;
import com.google.android.gms.appindexing.AppIndex;
import com.google.android.gms.common.api.GoogleApiClient;

import android.util.Log;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity
        implements NavigationView.OnNavigationItemSelectedListener {
    Button btnRegister;
    Button btnRequestLog;
    /**
     * ATTENTION: This was auto-generated to implement the App Indexing API.
     * See https://g.co/AppIndexing/AndroidStudio for more information.
     */
    private GoogleApiClient client;
    private String android_id;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

       Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
       setSupportActionBar(toolbar);
if ( findViewById(R.id.fab) == null)
    {}
        else {

        }
        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();
            }
        });

        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
                this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
        drawer.setDrawerListener(toggle);
        toggle.syncState();

        NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
        navigationView.setNavigationItemSelectedListener(this);
        // ATTENTION: This was auto-generated to implement the App Indexing API.
        // See https://g.co/AppIndexing/AndroidStudio for more information.
        client = new GoogleApiClient.Builder(this).addApi(AppIndex.API).build();

        // Buttons
        btnRegister = (Button) findViewById(R.id.btnRegister);
        btnRequestLog = (Button) findViewById(R.id.btnRequestLog);

XML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"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:openDrawer="start">

    <include
        layout="@layout/app_bar_main"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

    <android.support.design.widget.NavigationView
        android:id="@+id/nav_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:fitsSystemWindows="true"
        app:headerLayout="@layout/nav_header_main"
        app:menu="@menu/activity_main_drawer" />

</android.support.v4.widget.DrawerLayout>

请帮助我进行调试。我有点困惑，需要您的帮助。

Please help me in debugging this. I am kind of stuck and would need your help.

推荐答案

您正在使用矢量可绘制对象。在Android 4.x及更早版本上，仅在以下情况下支持此功能：

You are using vector drawables. On Android 4.x and earlier, this is only supported if you:

• 使用Android支持库23.x或更高版本✓


• 在gradle构建文件中启用它（vectorDrawables.useSupportLibrary = true）✓


• 使用 srcCompat 代替每当您使用 ImageView

• use Android Support Libraries 23.x or later ✓
• enable it in the gradle build file (vectorDrawables.useSupportLibrary = true) ✓
• use srcCompat instead of src whenever you use ImageView

最后一项可能是需要解决的问题。

The last item is probably the problem that needs to be fixed.

这篇关于应用程序在Android 5.1和6.1中运行良好，但在4.10（API 16）中崩溃的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！